Intraoral Cameras

April 29th, 2026

It seems today’s technology has made every moment a camera-ready opportunity. (Just check your friends and their latest selfies.) What you may not expect is the opportunity to see a close-up of your teeth and gums in vivid detail the next time you’re in our office. But with intraoral cameras, Dr. Selena Marchan can use the most up-to-date tools to provide your most accurate diagnosis—and let you see for yourself exactly what we’re seeing.

Intraoral cameras were developed in the 1980s. This camera makes use of a sleek wand-style design to fit easily into your mouth. Using a camera lens and its own lighting, the camera is able to show hard-to-reach places in the mouth much more clearly and easily than can be seen using dental mirrors alone. Images are projected onto a monitor or screen, where both dentist and patient can get a detailed view, and images can be enlarged, if needed, to provide better definition.

What can an intraoral camera reveal? While X-rays are invaluable for discovering treatable conditions such as cavities, infections and bone diseases, there are some conditions that are not easily apparent using X-rays alone. Small cracks in a tooth, developing cavities near crowns or older fillings, fractures, early gum disease, even areas where plaque has been missed during brushing are visible in clear detail using the intraoral camera.

How does this improve your dental care?

  • We always want to use the least invasive procedure we can, and keep as much of your healthy tooth as possible. Finding small problems early prevents them from becoming large problems later.
  • If you are consistently failing to brush certain teeth, or if some areas of your gums show signs of neglect, we can show you directly what places you’ve been missing so you can adjust your brushing and flossing habits.
  • We can take photos if needed for your files so we have a detailed visual record of your dental status at any point in time.
  • Finally, you will be able to see for yourself the reasons we might suggest certain treatments, and be better informed about your own dental health.

We’re happy to offer the intraoral camera at our Jacksonville office as one of the tools we use to provide you with the most precise and thorough care possible. Ready for your close-up?

Make Every Day Earth Day

April 22nd, 2026

Earth Day began in 1970 as an event to raise awareness of our environment. What began as a single day in April is now recognized around the world to bring attention and education to global environmental issues. Conserving our natural resources, reducing water and air pollution, and developing green technologies are all ways in which we can improve the environment around us.

Reduce, Recycle, and Reuse

One of the easiest ways to participate in Earth Day is by simply reducing the amount of refuse that ends up in landfills. Many communities have recycling programs for paper, plastic, and metal refuse. By keeping recyclable items out of landfills, we reduce the need for new disposal space and the amount of energy needed for burning refuse. Recycling products also helps conserve the resources that are used in making new products.

You can save money by reducing your consumption of many everyday products. Single disposable water bottles can be recycled but they are costly. By using filtered faucet water, you can conserve your financial resources. Disposable paper towels can also be wasteful. Consider reusable cleaning rags for the majority of your chores.

Reusing items saves both the environment and your finances. A large number of products can be re-purposed to create a new item. Old furniture can be remade into a new piece. Old clothing can be used for craft items. If you are not able to find ways to reuse your old items, donate them to a charity. Remember to continue your positive environmental steps on a daily basis.

Other things you can do to improve the environment

Everyone, young or old, can find ways to participate in improving the environment. Some ideas include:

  • Planting trees
  • Picking up litter
  • Reducing energy consumption
  • Walking, bicycling, or carpooling to work or school
  • Disposing of hazardous waste properly
  • Using rain barrels to conserve water for plants

Earth Day is designed to appreciate and celebrate the health of the earth. Keeping the earth healthy is important, but keeping your mouth healthy is important, too. Healthy teeth and gums contribute to your overall health and well-being, so remember to call our team at Selena L. Marchan, DMD, PA, to schedule an appointment. Have a happy and healthy Earth Day, from Dr. Selena Marchan!

Top Reasons People Choose Veneers

April 15th, 2026

Dental veneers are a way to correct and transform your smile by using “contact lens”-thin shells of porcelain or ceramic material and bonding them to the front of your teeth. They are strong and durable, look and feel like natural teeth, and improve your smile immediately. Here are some of the top reasons to consider getting dental veneers.

They Correct Multiple Cosmetic Issues

Dental veneers can help with cosmetic and dental health issues, and treat multiple problems at once. Some common reasons that individuals choose veneers is to close gaps and spaces between the teeth, fix alignment issues, change the overall shape and appearance of a tooth, whiten a smile by covering stained or discolored teeth, and cover chipped or cracked teeth.

If you have teeth that are already worn down and weakened, veneers help prevent further damage by covering them with a thin, tooth-colored shell.

Durability

Dental veneers are also extremely durable. They last several years longer than traditional composite fillings. You’ll have peace of mind when you choose veneers, knowing that you’ll have your new smile for many years. On average, dental veneers last about ten to 15 years. Just like your natural teeth, when you take good care of your veneers, they last longer.

Easy to Clean and Maintain

Keeping your veneers healthy and white is easy: You simply brush and floss them the way you do all of your teeth. Shortly after having your veneers installed, you’ll begin to think of them as your natural teeth because the thin shells lie right on top of your existing teeth. This makes it easy to floss and brush the way you normally would and keep them as clean as possible.

The Process is Simple

Getting dental veneers is a quick and easy process. You have a few short visits at Selena L. Marchan, DMD, PA, and see results. On average, it only takes about four weeks from your first appointment to your last to complete the veneer process.

If you are considering getting dental veneers, schedule a consultation appointment with Dr. Selena Marchan to find out exactly how they can benefit you.

When should a filling be replaced?

April 8th, 2026

There is no substitution for a natural healthy tooth. Dental fillings are intended to replace tooth structure and restore a tooth damaged by decay (a cavity) back to its normal function and shape. Silver (amalgam) and tooth-colored (composite) fillings last a long time, though they can develop decay when the integrity is compromised by open margins, fracture, or recurrent decay. In this blog, we discuss the signs and symptoms that indicate your filling may need to be replaced in order to prevent further complications.

Amalgam fillings are made of an alloy (mixed metals) that expands and contracts. They have no bonding properties, and so to place an amalgam filling, the hole in the tooth may need to be larger. Because of these two factors, fractures frequently occur. There are three types of cracks that are commonly associated. Craze lines are superficial with no treatment needed. Fractures extend along other parts of the tooth and may require a filling replacement or crown. Cracks extend toward the root and can require a root canal and crown or, if too severe, extraction.

A filing needs to be sealed to the tooth. If the seal between the tooth and the filling breaks down, food debris and bacteria can seep down under the filling and cause recurrent decay. If the decay is treated early, replacing the filling is adequate. If not, a crown and even a root canal may be needed. The biggest mistake you can make is waiting to do something about a broken or unsealed filling until it is painful. Doing this will only make the treatment more involved and often times more expensive.

Regular dental exams and X-rays are used to evaluate dental fillings. You will not be able to tell on your own when your fillings start to fail. Just as a car mechanic will change the oil, correct your alignment, or change your tires, a dental checkup will help you identify small concerns to fix as you go in order to avoid a critical emergency.

Pay attention to any bite or temperature sensitivity in teeth that have fillings. This can be an indicator for some of the problems listed above. You know your teeth better than anyone. Your observations are most valuable when evaluating a filling for replacement. If replacement is needed, know you are doing what is best to prevent future dental calamities and make an appointment to see Dr. Selena Marchan.

Do Spring Allergies Mean (B)Looming Dental Problems?

April 1st, 2026

April showers bring May flowers, and May flowers bring . . . allergies. If you’re one of the millions of people who suffer from seasonal allergies, you might be suffering some dental side effects as well.

When you have pollen allergies, pollen triggers your body’s immune system to release histamines. Histamines are part of the body’s defense system. They cause the tissues in the nose and sinuses to become inflamed and swollen as they increase blood supply to these areas. They also cause your body to produce more mucus.

Normally, mucus from the sinus cavities drains into the nasal cavity and then down the back of the throat, where it mixes with saliva and is swallowed. We never even notice it. Until it’s allergy season. Unfortunately, our defense mechanisms can have some offensively unpleasant consequences.

  • Headache & Facial Pain

Our sinus cavities are small hollow spaces in the bones of the head which are filled with air and, like our nasal cavities, are lined with mucous membranes. It’s these membranes, not surprisingly, which produce mucus. And though we might turn up our noses at this slippery topic, mucus is actually quite helpful for trapping and filtering out unwanted hitchhikers like bacteria, viruses, dust, pollens, and other pollutants in the air we breathe before they reach our lungs.

When histamines are released, normal mucus production increases to filter out those tiny pollen invaders. At the same time, tissue around the nose and sinuses swells up, which can trap mucus inside the sinus cavities. This, in turn, causes increased pressure within the sinuses, and this pressure brings on allergy-related headaches and facial pain.  

  • Nasal Congestion & Postnasal Drip

With the occasional runny nose or sneeze, you can blow your nose once or twice and that’s that. During allergy season, greatly increased mucus production might see you spending all day within reaching distance of your box of tissues. But when the tissue in your nose is swollen as well, you now find yourself with nasal congestion.

A stuffy nose means excess mucus has to exit somewhere else, which means this extra, often thicker, mucus all drains into the back of your throat. This is postnasal drip, and it can make you miserable in several different ways. Hoarseness. Coughing during the day. Worse coughing at night. Sore throat. Nausea. Difficulty swallowing.

All these allergy symptoms are uncomfortable enough! But, to add to our discomfort, allergies can lead to uncomfortable oral symptoms as well.

  • Tooth Pain

A common result of allergies is tooth pain. How does this happen? It’s because of the way our bodies are designed. The maxillary sinus cavities are directly above the roots of our upper molars.

When sinus cavities are congested and sinus pressure builds up, it also puts pressure on these roots. The result is tooth pain, usually affecting several upper molars at once.

  • Dry Mouth

One of the natural responses to a stuffy nose is mouth-breathing—we can’t go without air, after all! But exposing the inside of the mouth to all that air dries out delicate gum and mouth tissues. It also reduces normal saliva flow. This can cause xerostomia, more commonly known as dry mouth.

Because saliva neutralizes acidity in the mouth and washes away bacteria and other germs, lower saliva production means greater risk of cavities, infections, and bad breath. Dry mouth can also cause gum irritation and gingivitis, because less saliva means more harmful bacteria build-up between the gums and the teeth.

  • Antihistamines & Your Oral Health

If histamines are the problem, are antihistamines the obvious solution? This is a good question for Dr. Selena Marchan or your physician. Antihistamines can be very drying—so you might find you’re experiencing dry mouth even when all those other pesky allergy symptoms have disappeared. And, if you already suffer from xerostomia, it’s especially important to get your doctor’s advice before buying over the counter antihistamines.

In allergy season, just like any other time of the year, be sure to hydrate and keep up with brushing and flossing for fresh breath and healthy teeth and gums. Talk to Dr. Selena Marchan if you have persistent tooth pain, dry mouth, or irritated gums—it’s always best to rule out other causes like infection or decay.

But, if your problems are caused by allergies, you don’t have to wait until the next snowfall to get relief. Talk to your doctor or allergist for ways to reduce or eliminate your symptoms before allergy problems start blooming into dental problems. You’ll breathe easier!

How can parents help prevent tooth decay?

March 25th, 2026

Children are born with a set of primary teeth – 20 to be exact – that help them learn to chew and speak, and develop enough space in the jaw for the permanent teeth that will appear several years later. Kids are especially susceptible to decay, which can cause pain and tooth loss – a problem that could interfere with oral development. As a parent, it is important that you take proactive steps to keep your child’s teeth as healthy as possible.

Bottles and “Sippie Cups”

One of the biggest culprits of childhood tooth decay is poor diet. This begins as early as a few months old, when children are often allowed to go to bed with bottles and “sippie cups” of milk or juice. The sugars in these beverages – even natural sugars – can steadily decay the teeth.

Dr. Selena Marchan and our staff suggest serving children milk and juice only at meal times, and limiting juice intake to just a few ounces per day. If your child becomes thirsty between meals or likes to go to bed with a bottle, serve water during these times.

Hygiene

As a parent, you can establish healthy dental habits long before your child’s first tooth erupts. Start by gently wiping your baby’s gums with a clean wash cloth during the first months of life. By age one, graduate to an appropriately sized toothbrush with fluoridated toothpaste, and brush at least twice a day.

Dental Visits

Dental visits should start young and continue on a regular basis throughout your child's life. Dr. Selena Marchan and our staff recommend parents bring their children to Selena L. Marchan, DMD, PA, for the first time no later than the child’s first birthday. Initial visits concentrate on parental education, while later visits may include thorough cleanings and fluoride treatments as your child grows.

For more information about keeping your child’s teeth cavity-free, contact our Jacksonville office to schedule a dental consultation and checkup.

Using Sippy Cups Successfully

March 18th, 2026

Congratulations! Your child is beginning to leave her bottle behind and has started to use her first sippy cup. And the best training cup is one that makes the transition from bottle to cup an efficient, timely, and healthy one.

The Right Training Cup

While a “no spill” cup seems like the perfect choice for toddler and parent alike, those cups are designed much like baby bottles. The same valve in the no-spill top that keeps the liquid from spilling requires your child to suck rather than sip to get a drink. If your child’s cup has a top with a spout, she will learn to sip from it. Two handles and a weighted base make spills less likely.

When to Use a Training Cup

Children can be introduced to a sippy cup before they are one year old, and we suggest phasing out the bottle between the ages of 12 and 24 months. Use a sippy cup as the source for all liquids at that age, and only when your child is thirsty and at mealtime to avoid overdrinking. The transition from sippy cup to regular cup should be a swift one.

Healthy Sipping Habits

The best first option in a sippy cup between meals is water. Milk or juice should be offered at mealtimes, when saliva production increases and helps neutralize the effects of these drinks on young teeth. And don’t let your child go to sleep with anything other than water—falling asleep with a cup filled with milk, juice, or other sugary drinks means these liquids stay in the mouth overnight. Finally, while a sippy cup is convenient and portable, don’t let your young child walk and sip at the same time to avoid injuries.

When your child comes to our Jacksonville office for her first visit, please bring any questions you might have about training cups. We would be glad to share ways to make the move from bottle to cup both successful and safe!

St. Patrick's Day: Celtic pride, green shamrocks, and lucky charms!

March 11th, 2026

“St. Patrick's Day is an enchanted time -- a day to begin transforming winter's dreams into summer's magic.” Adrienne Cook

Lucky green shamrocks, leprechauns, and pots of gold – it must be St. Patrick’s Day! If you’re not Irish, how do you go about celebrating St. Patrick’s Day? It’s easy: You just put on one of those tall leprechauns hats, dress in green from head to toe, and wear one of those carefree pins that say “Kiss Me, I’m Irish”. On St. Patrick’s Day, everyone is Irish, and that is the universal beauty of the holiday. Celtic pride does not discriminate.

Wondering what our team at Selena L. Marchan, DMD, PA, is doing to celebrate March 17th? Well, we’ve thought about doing everything from handing out lucky gold coins (you know, the fake ones that are made of chocolate) to shamrock stickers. Maybe we’ll even give away green toothbrushes and floss! You’ll never know unless you come in to see Dr. Selena Marchan !

All kidding aside, St. Patrick’s Day is an important cultural and religious holiday. There are lavish parades and church services across Ireland on March 17th. Over time, however, the holiday has developed into a day to observe Irish culture in general. In places like England and the United States, where there is a large Irish Diaspora, the holiday has greater significance than other countries. From the streets of Boston to St. Patrick’s Cathedral in New York, it is a day of celebration, and many Americans of Irish descent will cook up a traditional meal of corned beef and cabbage.

So, to all of you with Irish ancestry, and to all of you who have decided to be Irish for the day, our office wishes you a Happy St. Patrick’s Day. Good luck looking for a pot of leprechaun gold, which is said to exist at the end of the rainbow. However, keep away from those sugary Lucky Charms; sweet cereals might taste good, but your kids’ teeth might not be feeling too lucky if they eat it for breakfast every day. Have a great St. Paddy’s Day!

Are your teeth ready for the big day?

March 4th, 2026

Capturing the Moment

At Selena L. Marchan, DMD, PA, we know that just about anyone who has taken on the challenge of planning her own wedding could tell you how important the little details can be. Things like having complementary colors, the right location, show-stopping flowers, and delicious food are all a big part of planning your spring wedding. Another little detail that has a big "I do" related role? Your smile.

Whether you’re the bride, or an attendant, looking your best when you tie the knot (or help someone tie the knot) is essential. If your teeth aren’t ready to make an entrance, turning to one of the many available teeth whitening solutions is a great option.

Reliable Solutions

Before the wedding day arrives, you should take your smile into consideration. If diet and daily wear-and-tear have caused your teeth to lose their original luster, our team can help! In-office procedures do cost more than kits you use at home, but with an in-office treatment, you benefit from a professional taking proper care of your teeth.

In addition, relying on our office to handle teeth whitening before the wedding can give you access to trustworthy advice on how to keep your teeth looking their best for a longer period of time. It’s common for someone experienced in assisting people with their oral health to suggest investing in an in-office whitening technique and then following up with a teeth-whitening kit at home.

This is a season of new beginnings and beauty. Take the time to bring out your most beautiful smile before the big day. Don’t let your smile hold you back on your wedding. With our in-office teeth whitening, you can be sure that you’ll be more confident and comfortable interacting with friends and family. So remember, when in need of some quality oral care in Jacksonville to think of Dr. Selena Marchan!

Make your child’s next visit to our office great!

February 25th, 2026

If you have been bringing your baby in for regular checkups since that first tooth arrived, you might expect that he or she is already familiar with Dr. Selena Marchan and our staff. Often, though, months pass between visits, which is a very long time for a child. How can you make your preschooler’s return visit a happy one? We have some suggestions!

Before Your Visit

  • Prepare your child for her visit. Simple explanations are best for a young child. You might tell your daughter that a dentist is a doctor who helps keep her teeth strong and healthy. Let her know a bit about what will happen. Being told, “You will sit in a special chair,” or, “Can you open wide so we can count your teeth?” will give her some idea of what it’s like to visit our office.
  • There are many entertaining books for young children about visiting the dentist. Reading some of these to her for a few days before the appointment will let her know what to expect.
  • Use playtime to prepare. You might count your daughter’s teeth or let her “play dentist” and brush the teeth of her favorite doll or stuffed animal.

When You Arrive

  • Your attitude can be contagious! If you treat a visit to the dentist like any other outing, chances are your child will too. Your calm presence is exactly what your child needs.
  • You might want to come a bit early to let your son explore the office. Bring a favorite toy or book to keep him entertained if you need to. A favorite stuffed toy can be a comfort in an unfamiliar place.
  • If you are with your child during his checkup, follow our lead. Don’t be concerned if your child seems uncooperative at first or even throws a tantrum—we are used to working with children, and have techniques to make his experience as relaxed and as positive as we possibly can.

We Are Here to Help

We are your partners in your child’s dental care. Call our Jacksonville office anytime for suggestions about making your child’s visit a comfortable, comforting experience. Our goal is to start your child confidently on the road to a lifetime of empowering dental visits and lasting dental health.

What to Expect if You Haven’t Been to the Dentist in Forever

February 18th, 2026

It’s easy to miss a dental appointment. Life and duties intervene, and suddenly you have to push your appointment back once, then again, or forget about it.

We get that. These days, we all have a lot going on. But what we don’t want is for a lengthy absence to make you anxious about returning. It doesn’t matter how long it’s been, we always love to see you! So let’s take a moment to explain what you can expect when you pay us a visit.

Your appointment will last roughly 60 to 90 minutes, so keep that in mind when you schedule it and plan accordingly. Dr. Selena Marchan and our team want you to feel comfortable.

One of the first things we will ask is the reason for your visit. You’ll have the opportunity to let us know about any concerns or questions you may have. No question is too small, so ask away!

Next, we will go over your medical and dental history to make updates to your file as necessary. This will usually be followed by X-rays to give us a better idea of what is currently happening with your teeth. We will finish with a screening for oral cancer and periodontal disease. If you haven’t visited us in a while, we want to make sure nothing serious is going on.

After that, you will undergo a cleaning with one of our hygienists. Your teeth will be cleaned and checked for such things as broken fillings, cracked teeth, or active decay. Finally, Dr. Selena Marchan will come by for a final look and a rundown of your dental needs.

Then you’re ready to go! On your way out, you’ll discuss options for scheduling your next appointment, insurance coverage, and payment plans if applicable. You will also receive a goodie bag with a new toothbrush, floss, and toothpaste to get you started (and motivated) on the path to great dental health!

We always want our patients’ experience to be as comfortable and as easy as possible. From the moment you pick up the phone to make your appointment, our team is here to make sure we always meet your needs.

No matter how long it’s been since your last visit, we hope you’ll give us a call to make your next appointment at our Jacksonville office.

The Start of Valentine’s Day

February 11th, 2026

Valentine’s Day, also known as Saint Valentine’s Day, has been said to originate with a Catholic priest named Valentine several thousand year ago. Valentine defied the emperor at the time by secretly marrying men and their brides after the emperor had made it illegal to marry. Emperor Claudius II did this because he wanted as many single young men to fight in his war as he could get.

Valentine disobeyed the emperor’s edict by continuing to marry couples until he was sentenced to death. Before his execution, he sent a letter to a secret love and signed it “From your Valentine.” Dr. Selena Marchan and our team have come up with some suggestions on how you can celebrate this Valentine’s Day, whether you have a valentine of your own or not.

Valentine's Day Ideas

  • Enjoy a tasty treat. There are plenty of options when it comes to cooking and/or baking on Valentine’s Day. Make your significant other his or her favorite meal or sweet treat, or make your own favorite dish to enjoy on this day. Oh, and be sure to make enough for leftovers!
  • Make a personalized card. Instead of buying a card from the grocery store, take the time to make your own for a loved one. People love handwritten notes, especially when it’s from someone special. If you’re single this Valentine’s Day, make a card for fellow single friend to brighten the day and remind the person that he or she is also loved.
  • Watch a movie. We all know there are plenty of romance movies out there. Put on your favorite romantic comedy, or pick up your significant other’s favorite movie to watch together. Even better, if you’re single, pick up your own favorite movies to watch to pass the time this Valentine’s Day.
  • Do nothing! We all know Valentine’s Day can sometimes get a lot of hype. If you’re worried about not making a reservation in time, don’t feel like planning an extravagant night out, or simply not in the holiday mood this year, spend your day sitting back and relaxing.

Valentine’s Day is a time to celebrate love and spend quality hours with the people you care about the most. Whether you’re in a relationship or single, take some time today to appreciate those you love in your life.

We wish you a happy Valentine’s Day celebration and look forward to seeing you at our Jacksonville office during your next appointment.

February Is Children’s Dental Health Month

February 4th, 2026

It’s the littlest month of the year, so what better time to think about the dental health of our littlest family members? February is National Children’s Dental Health Month, and we’re here to suggest some of the best dental habits for healthy childhood smiles.

Babies 

  • Even before your baby cuts her first adorable tooth, you can start proactive dental care by gently wiping little gums with a clean, moist gauze pad or soft cloth twice a day. This removes bacteria and food particles and helps prepare your baby for brushing.
  • When that first tooth does appear, or by age one if it hasn’t yet erupted, it’s time to schedule a visit to the dentist. At this first visit, your child’s dentist will check jaw and tooth development and can give expert guidance on teething, brushing, how much and which kind of toothpaste to use, and topics like thumb-sucking and pacifier use.
  • When baby teeth arrive, use a small soft-bristled toothbrush designed to fit comfortably in tiny mouths.
  • Use toothpaste as recommended. Children under the age of three who use paste should use a very small amount, no larger than a grain of rice.
  • Prevent “baby bottle tooth decay”—don’t put your baby to bed with a bottle. This allows the sugars in formula or, when your child is 12 months or older, milk, to bathe the teeth throughout the night. And babies and toddlers never need sugary juices or sodas in those bottles!

Toddlers 

  • Help your child develop a positive relationship with his dental team. Read books or watch videos to help your child learn what to expect. Practice with him by having him open his mouth while you count his teeth. Plan visits when your child isn’t hungry or tired. Be positive yourself—your child will take his cues from you!
  • Schedule regular appointments for exams and cleanings. Dr. Selena Marchan will check tooth and jaw development, look for any signs of decay, and evaluate potential problems such as prolonged thumb sucking or pacifier use. 
  • By age three, children have most or all of their baby teeth. Use a soft bristled brush to clean your child’s teeth twice each day. As she grows, demonstrate how to brush properly. The dental team at Selena L. Marchan, DMD, PA, will have some great ideas on technique!
  • Daily flossing should begin as soon as your child has two teeth which touch. 
  • Around age six, your child may be transitioning to solo brushing and flossing—but your oversight is still needed. Make sure all the surfaces of the teeth, including the tops of new molars, are brushed thoroughly. You might provide a timer or a two-minute song or video to make sure your child spends enough time brushing. Flossing can be tricky for young hands, so you’ll need to help with that task for a few years more.

School-Aged Children

  • Dentists and orthodontists recommend a first visit to the orthodontist by age seven, or earlier if you notice your child has trouble chewing or biting, if the teeth don’t seem to fit together properly, or if you have any concerns about bite and alignment. When potential problems are discovered right away, early intervention can prevent more serious orthodontic issues from developing later. The team at Selena L. Marchan, DMD, PA, in Jacksonville is happy to answer any questions you might have about early interventions!
  • Talk to Dr. Selena Marchan about sealants. Permanent molars usually erupt between the ages of 6 and 12. Sealants are thin coatings which protect the chewing surfaces of these molars from food particles and cavity-causing bacteria which would otherwise collect inside grooves in the enamel.
  • Children who play sports and engage in activities with a chance of physical contact should have a well-fitted mouthguard to protect their teeth. Be ready to replace it as often as recommended by Dr. Selena Marchan or if it’s damaged.
  • Increases in hormones during puberty can lead to puberty gingivitis, and swollen, red, and bleeding gums can be the result. Proactive dental hygiene will prevent gum disease from developing. Make sure your child brushes two minutes, twice a day, and flosses once per day. If symptoms persist, it’s time to see the dentist.
  • If your child is beginning orthodontic treatment, you can help make the journey easier. Keep up with appointments and adjustments, look for toothbrushes and floss designed for braces, and provide braces-friendly foods. If your child wears bands or aligners, you may need to remind her to wear them for the recommended number of hours each day. 
  • A nutritious diet is essential for healthy teeth and gums. Give your child solid nutritional building blocks with a diet rich in proteins, vitamins, and minerals. 

Help your child enjoy a future of healthy, confident smiles by working in partnership with your child’s dental team. They are ready every month of the year with advice and expertise to make that healthy dental future a reality!

Make Tooth Brushing Fun

January 28th, 2026

The best brushing routine for parent and child is two minutes of gentle brushing in the morning and two in the evening. But if the longest four minutes of your day are spent helping your child brush and floss, here are some suggestions for making that time fly.

Options!

Children’s brushes come in a wonderful variety of colors, patterns, and shapes. Allow your child to choose a favorite the next time you go shopping for dental supplies. Just make sure to choose a soft bristle brush with a head designed for small mouths. And since toothbrushes generally wear out after three months, your child will have plenty of opportunities to pick and choose! You might also explore the many flavors of children’s toothpaste to find the one that your child finds most appealing, and let your young brusher squeeze out a dab on that new brush.

Reward Daily Brushing

You don’t have to go to great lengths to make your son or daughter feel rewarded for a job well done. Allowing children to pick out a story for you to read or posting colorful stickers on a calendar sheet will encourage them to get into the habit of brushing.

Two-Minute Countdown

Time seems to go faster when we’re having fun. Your child might enjoy listening to songs or stories for the two minutes of brushing time. You can make your own playlist, invent a story starring your child, or make use of one of the dental apps that offer children’s music, videos, and stories in perfect two-minute segments.

Do It Together

Spend these two minutes twice a day with your child. You will be doing all the brushing at first, of course, but as your children get older, brush your teeth along with them. You can model proper brushing techniques for cleaning teeth, gums and tongue, and even let your child have a chance to brush your teeth for a change.

Don’t Forget Checkups!

Scheduling checkups and professional cleanings at our Jacksonville office is vital to maintaining your child’s oral health. And, if your son or daughter is keeping up with good hygiene at home, these visits should be a breeze!

The habits your child develops now will be the foundation for a lifetime of oral health. Make these four minutes a day count. And if you can create ways to make them fun, those four minutes will fly by for both of you!

What Are Dental Sealants?

January 21st, 2026

You’re constantly playing defense. Your child spends two minutes in the morning and two minutes at night carefully brushing and flossing with a fluoride toothpaste. You make sure sugary and acidic foods are not a major part of your diets. Your child visits our Jacksonville office for regular exams and cleanings. Really, how can a cavity get past all that?

But even with the best defensive practices, you don’t have a level playing field—literally. The tops of our molars and premolars don’t have the smooth, easy-to-clean surfaces that our other teeth have. If you look at the chewing surfaces, you will notice deep grooves which toothbrush bristles have a much harder time reaching.  

Plaque and food particles can become trapped in these grooves (known as pits and fissures), providing perfect conditions for a cavity to develop. That is why cavities are so common in newly erupted molars. Dental sealants protect these teeth from cavities by providing a barrier which smooths out the surface of the tooth and prevents food and bacteria from reaching the molar’s crevices.

Most sealants are invisible plastic resin coatings which we apply in our Jacksonville office. Usually the procedure is so quick and easy that no dental anesthetic is required. Each tooth will be examined first. If we find any signs of early decay, we will gently treat that area before beginning.

When the tooth is ready, it will be cleaned and dried. An etching solution will be brushed on to the dry surface to roughen the area a bit so that the sealant will hold to the tooth more effectively. A thin coat of the sealant is then painted on and hardened under a curing light. And that’s it!

Once teeth are sealed, they should be cleaned and flossed just as carefully as before. Regular exams and cleanings are still very important, and we can monitor the condition of the sealant and the sealed teeth. Properly applied, sealants can last from three to five years, or even longer.

Who should consider sealants? Sealants are typically recommended when the permanent molars first erupt. Children’s enamel takes a while to become its strongest, and so these just-erupted teeth are more at risk for cavities. Sometimes Dr. Selena Marchan will recommend sealants for primary (baby) teeth if needed. But even adults can benefit—talk to us if you are interested and we will let you know if sealants might be right for you.

Sealants are a simple, safe, and minimally invasive way to prevent cavities. Studies of sealed molars and premolars show a dramatic reduction in cavities compared to untreated teeth. Sealants are one of the most effective ways to defend your teeth or your children’s teeth from tooth decay. And as we’ve all heard—defense wins championships!

How to Prevent Dry Socket

January 14th, 2026

When you have a tooth extracted, your body immediately sets to work to help protect the affected area. The blood that collects at the site of the extraction clots to cover and protect the wound. This is a normal response, and protects the nerves and bone that have been exposed with the removal of your tooth. Normally, the gum tissue will close over the area within a few weeks.

But sometimes the clot becomes dislodged or moved before you have a chance to heal. The result is that the nerves and bone in the extraction site are exposed to air and outside substances. Bacteria can contaminate the wound and lead to pain, infection, and further damage. This condition is known as dry socket.

There are certain activities that should definitely be avoided so you are not at risk for dry socket.

  • Straws and suction: The action of using a straw causes suction that can dislodge the clot. You can still enjoy the soothing coolness of a milkshake, but use a spoon.
  • Spitting: You might be tempted to rinse and spit immediately to clean your mouth, but spitting can also dislodge the clot. We will let you know how to clean your mouth and teeth for the next few days.
  • Smoking: Not only does smoking provide a suction effect that can remove the clot, but smoking and chewing tobacco can slow healing as well.

There are also steps you can take to aid the healing process.

  • Caring for your extraction site

Dr. Selena Marchan will give you instructions on caring for your mouth and teeth for the next few days. Gentle care for the extraction site is vital. And treat yourself gently as well. Rest if you need to, and avoid activities that might impact your wound.

  • Think about your diet

Stick to soft foods for the first day or so and chew on the side opposite your extraction site. Carbonated and caffeinated beverages should be avoided, as well as food like peanuts or popcorn that lodge in the teeth.

  • Watch for symptoms of dry socket

How do you know if you have a dry socket? Monitor your pain and the appearance of the site after the extraction. For the first few days, you might feel some pain in the immediate area. Pain that intensifies after three or four days is usually not a result of the extraction. An unpleasant odor or taste in your mouth could be a sign of dry socket. You might look in the mirror and notice that the clot is no longer there, or appears to have been dislodged. If any of these symptoms occur, call our Jacksonville office at once. If you are experiencing dry socket, the extraction site needs to be cleaned and protected from further injury, and we can prescribe antibiotics if needed.

Dry socket is a rare occurrence, but if you have any symptoms that concern you, we want to hear about them. We will work with you to make your extraction go as smoothly as possible. Talk to us about your concerns before any procedure, and we will provide detailed information for the healing process. Keep us in the loop as you recuperate, and we will work together to make your recovery a speedy one.

Make this the Year You Stop Smoking

January 7th, 2026

It’s a new year, and it couldn’t come fast enough for many of us! Let’s do our part to make this a better year in every way—and you can start by making this the year you quit smoking once and for all.

You know that smoking is very damaging to your body. Smokers are more likely to suffer from lung disease, heart attacks, and strokes. You’re at greater risk for cancer, high blood pressure, blood clots, and blood vessel disorders. With far-reaching consequences like this, it’s no surprise that your oral health suffers when you smoke as well.

How does smoking affect your teeth and mouth?

  • Appearance

While this is possibly the least harmful side effect of smoking, it’s a very visible one. Tar and nicotine start staining teeth right away. After months and years of smoking, your teeth can take on an unappealing dark yellow, orange, or brown color. Tobacco staining might require professional whitening treatments because it penetrates the enamel over time.

  • Plaque and Tartar

Bacterial plaque and tartar cause cavities and gum disease, and smokers suffer from plaque and tartar buildup more than non-smokers do. Tartar, hardened plaque that can only be removed by a dental professional, is especially hard on delicate gum tissue.

  • Bad Breath

The chemicals in cigarettes linger on the surfaces of your mouth causing an unpleasant odor, but that’s not the only source of smoker’s breath. Smoking also dries out the mouth, and, without the normal flow of saliva to wash away food particles and bacteria, bad breath results. Another common cause of bad breath? Gum disease, which is also found more frequently among smokers.

  • Gum Disease

Smoking has been linked to greater numbers of harmful oral bacteria in the mouth and a greater risk of gingivitis (early gum disease). Periodontitis, or severe gum disease, is much more common among smokers, and can lead to bone and tooth loss. Unsurprisingly, tooth loss is also more common among smokers.  

  • Implant Failure

Tooth implants look and function like our original teeth, and are one of the best solutions for tooth loss. While implant failure isn’t common, it does occur significantly more often among smokers. Studies suggest that there are multiple factors at work, which may include a smoker’s bone quality and density, gum tissue affected by constricted blood vessels, and compromised healing.

  • Healing Ability

Smoking has been linked to weakened immune systems, so it’s harder to fight off an infection and to heal after an injury. Because smoking affects the immune system’s response to inflammation and infection, smokers suffering from gum disease don’t respond as well to treatment. Smokers experience a higher rate of root infections, and smoking also slows the healing process after oral surgeries or trauma.

  • Dry Socket

Smoking following a tooth extraction can cause a painful condition called “dry socket.” After extraction, a clot forms to protect the tooth socket. Just as this clot can be dislodged by sucking through a straw or spitting, it can also be dislodged by the force of inhaling and exhaling while smoking.

  • Oral Cancer

Research has shown again and again that smoking is the single most serious risk factor for oral cancer. Studies have also shown that you reduce your risk of oral cancer significantly when you quit smoking.

Quitting smoking is a major accomplishment that will improve your life on every level. It’s always a good idea to talk to Dr. Selena Marchan for strategies to help you achieve your wellness goals for the new year. Make this the year you stop smoking, and the year your health improves in countless ways because you did.

Things You Probably Didn’t Know About New Year's Eve

December 31st, 2025

It’s no secret that New Year’s Eve is one of the most widely celebrated holidays in the world. Dr. Selena Marchan and our team love it too. It’s a fresh start, another year of surviving the crazy world we live in, a time to refocus on the things we want for ourselves, a celebration with those we love … the list goes on.

Dozens of countries welcome the New Year with over-the-top parties and celebrations. Because it’s a public holiday, many offices, businesses, and schools close for the day. As you think about your plans for this holiday, here are some fun facts about New Year’s that might surprise you!

Can you guess what the most common New Year’s resolutions are? You may already have one or two of these on your own personal list. The top five New Year’s resolutions are: to quit smoking, get a new job, lose weight, increase personal savings, and return to school. Just remember that coming up with a concrete plan to reach your goals is the surest way to achieve your resolutions!

About one million people brave the cold to watch the New Year’s Eve ball drop in New York City’s Times Square in person. Yes, that’s one million! This event is one of the most iconic celebrations in the world. People travel from all over just to experience it, but you can watch from the warmth and comfort of your living room.

If you’re not a fan of cabbage, collard greens, black-eyed peas, or ham hocks, you might want to revise your tastes. All these foods are all regarded as lucky fare on New Year’s Day. Unless you’re allergic, of course!

For many people in Mexico and Latin America, eating 12 grapes at midnight is a tradition that brings good luck in the 12 coming months. Most people even make a wish per grape!

Whether you’re celebrating in Jacksonville or traveling elsewhere to observe the holiday, New Year’s Eve is a time to enjoy the company of your friends and family. Don’t forget to send warm wishes to your loved ones, and snag a midnight kiss with that special someone if you can!

Osteoporosis and Oral Health

December 24th, 2025

Today, Dr. Selena Marchan and our team at Selena L. Marchan, DMD, PA, thought we would examine the relationship between osteoporosis and oral health, since 40 million Americans have osteoporosis or are at high risk. Osteoporosis entails less density in bones, so they become easier to fracture. Research suggests a link between osteoporosis and bone loss in the jaw, which supports and anchors the teeth. Tooth loss affects one third of adults 65 and older.

Bone density and dental concerns

  • Women with osteoporosis are three times more likely to experience tooth loss than those without it.
  • Low bone density results in other dental issues.
  • Osteoporosis is linked to less positive outcomes from oral surgery.

Ill-fitting dentures in post-menopausal women

Studies indicate that women over 50 with osteoporosis need new dentures up to three times more often than women who don’t have the disease. It can be so severe that it becomes impossible to fit dentures correctly, leading to nutritive losses.

Role of dental X-rays in osteoporosis

The National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) released research that suggest dental X-rays may be used as a screening tool for osteoporosis. Researchers found that dental X-rays could separate people with osteoporosis from those with normal bone density. As dental professionals, our team at Selena L. Marchan, DMD, PA, are in a unique position to screen people and refer them to the appropriate doctor for specialized care.

Effects of osteoporosis medications on oral health

A recent study showed that a rare disease, osteonecrosis, is caused by biophosphenates, a drug taken by people for treatment of osteoporosis. In most cases, the cause was linked to those who take IV biophosphenates for treatment of cancer, but in six percent of cases, the cause was oral biophosphenates. If you are taking a biophosphenate drug, let Dr. Selena Marchan know.

Symptoms of osteonecrosis

Some symptoms you may see are pain, swelling, or infection of the gums or jaw. Additionally, injured or recently treated gums may not heal: teeth will be loose, jaws may feel heavy and numb, or there may be exposed bone. Some of the steps you can take for healthy bones are to eat a healthy diet rich in calcium and vitamin D, regular physical exercise with weight-bearing activities, no smoking and limited use of alcohol, and report problems with teeth to our office, such as teeth that are loose, receding gums or detached gums, and dentures that don’t fit properly.

For more information about the connection between osteoporosis and oral health, or to schedule an appointment with Dr. Selena Marchan, please give us a call at our convenient Jacksonville office!

Is your child a mouth breather?

December 17th, 2025

Have you ever watched to see if your child is breathing through his or her mouth? Breathing through the mouth instead of the nose may lead to trouble for youngsters. Kids who typically breathe through their mouth—most often children who suffer from allergies—experience problems getting enough oxygen into their blood, a condition that affects their weight, size, sleep, and even their performance in the classroom and daily life.

Mouth breathing as a child can also lead to sleep apnea, behavior and learning problems, delayed speech, dental and facial abnormalities, and even breathing problems as your child grows. There are a multitude of reasons for an individual to mouth breathe, such as enlarged tonsils, adenoids, and deviated nasal septum, but the cause is usually allergies.

As bad as the condition sounds, we want you to know mouth breathing is a treatable condition. Doing so, though, requires early diagnosis and treatment. Since our team at Selena L. Marchan, DMD, PA, sees our patients every six months, we may be in a position to identify the symptoms of mouth breathing.

If you suspect your child is a chronic mouth breather, please give us a call at our convenient Jacksonville office to schedule an appointment with Dr. Selena Marchan.

The Root of the Matter

December 10th, 2025

A strong, healthy smile is built on a strong, healthy foundation. Let’s take a moment to explore just what creates that foundation—your roots.

The Root of the Matter

The visible part of your tooth is called the crown. And while we spent the great majority of our time thinking about what goes on above the gum line—brushing, flossing, whitening, sealing, preventing cavities—the roots, the parts of the teeth below the surface, are also essential to our dental health.

  • What’s inside the root?

The inside of each tooth holds pulp, which is living tissue made of nerves, blood vessels, and connective tissue. The nerves in the pulp allow us to feel pain when a tooth is damaged, decayed, or infected. Tiny blood vessels provide oxygen and nutrients to the cells.

The inside of each root also contains pulp, located in one or more root canals. These canals are small tunnels that travel from the pulp chamber to the tip of each root. Nerves and blood vessels connect pulp tissue to the nervous and circulatory systems in the body, entering and exiting the tooth from very small openings in the root tip.

  • What’s outside the root?

On the outside, while roots look like crowns, they’re covered with a different protective surface. Roots are covered by cementum rather than enamel. This is a hard tissue, but not as hard as enamel. But cementum has another advantage—it not only helps protect our teeth, it helps them stay anchored in our jaws. (More on this below.)

  • How many roots are we talking about?

The number varies, not just depending on the tooth, but depending on the individual. Most adults have 32 adult teeth: eight incisors, four canines, eight premolars, eight molars, and four wisdom teeth, or third molars. Because the number of wisdom teeth can range from four to zero, though, that total can be smaller.

Rooted to the Spot

The reason that you can rely on your teeth for a lifetime of chewing, biting, and grinding food is the fact that they’re so securely anchored in the jaw.

  • Alveolar bone in the jaw contains a socket for each tooth.
  • A thin layer of connective tissue called the periodontal ligament lines the socket and surrounds each root. It’s filled with fibers that attach to the root’s cementum covering and to the alveolar bone, holding the tooth securely in place.
  • The periodontal ligament not only anchors the tooth, it cushions it from the daily pressure of biting and chewing.
  • Finally, the gums surround the teeth and bone, protecting them from bacteria and plaque.

Even though this design is very secure, there are situations where the root becomes vulnerable. In that case, you should see Dr. Selena Marchan at our Jacksonville office right away. Our goal is for you to keep your teeth healthy and strong, and for a lifetime!

Happy Holidays! Healthy Holidays!

December 3rd, 2025

It’s the holiday season! With so much to do and so much going on, you want to be at your best. We have some ideas to help make your season bright with a few easy tips for a healthy smile.

  • Keep Your Smile Merry and Bright

There’s a lot going on during the holidays. Visiting friends. Traveling to see family. Parties and get togethers. With all the enjoyable festivities on your holiday schedule, you might be tempted to overlook brushing or flossing. But, please don’t!

Many of our favorite holiday traditions and activities are centered around sharing good company, good cheer—and good food.

Indulging in more treats throughout the day, especially sugars and simple carbs, provides more fuel for the bacteria in plaque. These bacteria produce acids that weaken tooth enamel—the first stage of tooth decay. Plaque buildup also irritates the gums, causing swelling, redness, pain, bleeding, and chronic bad breath.

How to avoid these not-so-jolly consequences? Make time in your holiday schedule for dental care! Brushing twice a day for two minutes and flossing once each day removes plaque buildup and helps prevent cavities and gum disease.

  • Holiday Snacks—Naughty or Nice?

We’re no Scrooges—enjoying holiday treats is one of the ways we celebrate. But since we’re trying to prevent a plaque buffet of sugar and simple carbs, it’s a good idea to add some healthier foods to the mix.

Whether it’s platters of snacks around the game table or a stylish hors d’oeuvre array, don’t forget to add nutritional, dental-friendly items to your plate. Options such as fresh fruits and vegetables, cheeses, nuts, and whole grain breads and crackers are great partners for more indulgent selections because they’re lower in added sugars and provide vitamins and minerals to strengthen teeth and gums.

And from the candy bar? Hard candies and candy canes make our naughty list because they take a long time to dissolve while bathing your teeth in sugar. So do caramels, toffees, and gumdrops, which stick between teeth and gums. Soft chocolates? A much nicer choice, because they are more easily rinsed away by saliva or a drink of water. Which leads us to . . .

  • A Toast to Your (Dental) Health!

The holidays offer some of our favorite seasonal beverages. But spiced lattes, mochas, and hot chocolate can be full of sugar.

The answer? Enjoy in moderation, and enjoy with a glass of water. Water washes away sugars, neutralizes acids, helps increase saliva flow for tooth and gum health, hydrates, and, when it’s fluoridated, protects and repairs your enamel. That’s a lot of gifts in one convenient package!

  • Dashing through the Snow?

If you’re taking to the slopes, or the hills, or the rink for a little holiday exercise, don’t forget to protect your teeth and mouth. It’s not just sports like football and hockey that cause dental injuries—it’s any sport where you can fall or make contact with someone or something.

If you don’t have a mouthguard, they’re available at sporting goods stores in stock sizes or models that can be molded to your teeth. A custom mouthguard from our Jacksonville office is more comfortable, fits better, and protects you better. This is a perfect gift to give yourself so you can take advantage of all those cold weather sports with confidence.

We all look forward to holiday surprises—but not when they take the form of cavities, gum disease, or dental injuries! In the flurry of holiday activities, keep up with your regular dental care, and you’ll be looking forward to a new year filled with happy and healthy smiles.

Thanksgiving in North America

November 26th, 2025

Thanksgiving marks the start to the holidays; a season filled with feasting, indulging, and spending time with family and friends are always special. Thanksgiving is a holiday meant for giving thanks, and while this may seem like such a natural celebration, the United States is only one of a handful of countries to officially celebrate with a holiday.

Unlike many holidays, Thanksgiving is a secular holiday, and it is celebrated on the fourth Thursday in November in the United States. In Canada, it is celebrated on the second Monday of October, which is, oddly enough, much closer to a time when harvests were likely gathered. In addition to the different dates, the origins of the celebration also share different roots.

Thanksgiving in the United States

Giving thanks for a bountiful harvest are not new, but the modern day holiday in the US can be traced to a celebration at Plymouth in Massachusetts in 1621. This feast of thanksgiving was inspired by a good harvest, and the tradition was simply continued on. At first, the colony at Plymouth didn't have enough food to feed everyone present, but the Native Americans helped by providing seeds and teaching them how to fish, and they soon began to be able to hold a feast worthy of the name. The tradition spread, and by the 1660s, most of New England was hosting a Thanksgiving feast in honor of the harvest.

Canadian Thanksgiving

An explorer of early Canada named Martin Frobisher is accredited for the first Canadian Thanksgiving. He survived the arduous journey from England through harsh weather conditions and rough terrain, and after his last voyage from Europe to present-day Nunavut, he held a formal ceremony to give thanks for his survival and good fortune. As time passed and more settlers arrived, a feast was added to what quickly became a yearly tradition. Another explorer, Samuel de Champlain, is linked to the first actual Thanksgiving celebration in honor of a successful harvest; settlers who arrived with him in New France celebrated the harvest with a bountiful feast.

A Modern Thanksgiving

Today, Thanksgiving is traditionally celebrated with the best of Americana. From feasts and football games to getting ready for the start of the Christmas shopping season, Thanksgiving means roasted turkey, pumpkin pie, and green bean casserole. No matter how you celebrate this momentous day, pause for a moment to give thanks for your friends, family, and all the bounties you’ve received. Happy Thanksgiving from Selena L. Marchan, DMD, PA,!

Dental Sealants for Baby Teeth?

November 19th, 2025

Perhaps you’ve heard your friends talking about dental sealants, and how well they prevent cavities. And as soon as your child’s permanent molars come in, you absolutely plan to make an appointment at our Jacksonville office for this treatment. But should you also be concerned with your child’s baby teeth? Could they benefit from sealants too?

Even though those beautiful baby teeth are going to be replaced with permanent teeth, they should still be protected. Primary teeth help with speech development, enable your child to develop proper chewing and eating habits, and serve as place holders so that permanent teeth can erupt in the correct place. That’s why you’ve been so careful to help your child brush and floss twice daily, and make regular visits to our office for exams and cleanings.

But some teeth are just harder to keep clean with regular brushing than others. Primary molars, just like permanent ones, have depressions and grooves on the chewing surfaces. These grooves collect bacteria and food particles that are hard for bristles to reach, providing a perfect opportunity for cavities to develop in those little molars.

Cavities are not the only problem which can affect primary teeth. Because baby teeth have thinner layers of protective enamel, a cavity can actually reach the pulp (the center of the tooth) more quickly, leading to pain and potential infection.

While baby teeth can be treated, with fillings, restorations, and even stainless steel crowns, preventing tooth decay is always our first, best choice. And dental sealants are recommended by the American Academy of Pediatric Dentistry and the American Dental Association as one of the most effective ways to prevent cavities in both baby teeth and adult teeth.

Dental sealants are safe and effective.  Sealants are thin coatings (usually a plastic resin or other dental material) that cover a molar’s grooves and depressions, making it impossible for bacteria and food particles to collect there. Applying them is a simple, pain-free process.

Each tooth will be examined first. If we find any signs of decay starting, we will gently treat that area before applying the sealant. After the tooth is cleaned and dried, an etching solution will be brushed on to the surface area being sealed. This etching roughens the surface so that the sealant will hold to the tooth more effectively. A thin coat of the sealant is then painted on and hardened under a curing light.

That’s all there is to it! Sealants typically last from three to five years, and some last even longer. Keep up your regular careful brushing and flossing, and we will monitor the condition of the sealants at each exam.

Talk to Dr. Selena Marchan about dental sealants. We’ll let you know if your child can benefit from the procedure even before those baby teeth give way to permanent ones. It’s never too early to prevent tooth decay!

Your Options for Sedation Dentistry

November 12th, 2025

Fear of going to the dentist is more common than you may think. That’s why Dr. Selena Marchan and our team want to make your visit as relaxing as possible.

Your anxiety about pain or routine procedures doesn’t have to stop you from visiting our Jacksonville office; we offer various types of sedation to remove the pain and stress from your dental procedure.

Nitrous Oxide Sedation

Nitrous oxide combined with local anesthetics ensures both pain relief and reduced anxiety for many patients. It’s useful because the dosage can be regulated during treatment, and patients are usually able to drive shortly after the procedure is completed.

Oral or Injected Sedation

With oral sedation, you may be given a pill or liquid to consume several hours before your treatment. Make sure someone will be available to drive you to your appointment, because you will not be able to drive yourself.

An oral liquid is often given to children before any shots or intravenous anesthesia. An intramuscular injection may be given at the office to provide relaxation benefits for 20 to 30 minutes.

Nitrous Oxide with an Oral Sedative

For patients with higher levels of anxiety, an oral or injected sedative can be offered before nitrous oxide begins. This can also be effective for reducing anxiety about the injection of local anesthetics itself. A liquid medication followed by nitrous oxide is beneficial for children to produce a deep sedation level.

General Anesthesia

This type of anesthesia can be offered as an inhaled gas or intravenous liquid. If no oral sedative is given before the general anesthesia is administered, you should wake up quickly after your procedure.

To reduce your anxiety, we can offer a pill or liquid medication before intravenous sedation starts. Intravenous sedation can also be used at moderate-to-deep sedation levels without complete loss of consciousness.

Dr. Selena Marchan and our team are happy to go over your sedation or pain prevention options when you visit. We’re here to ensure all your questions are answered and your procedure is a relaxing one.

Getting Ready for Winter

November 5th, 2025

Winter Is Coming.

Okay, that sounded a lot more dramatic in a popular fantasy series. But here in the real world, winter is coming as well, so let’s look at some easy steps you can take to keep your teeth and gums healthy during this icy season.

Remember to Hydrate

Dehydration is dangerous for your health in general, and it’s also bad for your dental health. A dry mouth is more vulnerable to gum disease and tooth decay because there’s less saliva to help maintain a healthy oral environment. Saliva helps wash away food particles and bacteria, works to neutralize the cavity-causing acids they produce, and strengthens tooth enamel with its mineral content.

Summer means heat and perspiration—two obvious causes of dehydration. Winter, though, has its own more subtle ways to dry you out.

  • Just as you lose moisture through summer perspiration, you lose moisture with a winter workout as well. That foggy cloud you see when you exhale outdoors? That’s water vapor leaving your body.
  • Cold weather means it’s time to kick up the heating system a few degrees. But unlike heated summer outdoor air, heated winter indoor air is not as humid, so it’s more drying.
  • Some of us just aren’t as thirsty during winter months, and so we don’t hydrate as regularly as we do in the summer. And while summer menus tend to offer foods like salad, fruits, and iced drinks which automatically provide us with a lot of water content, winter menus? Not so much. Keep up with your daily recommended amount of water throughout the year for a healthier body and healthier teeth and gums.

Wear Your Mouthguard

Whether it’s skiing, hockey, snowboarding, or skating, those winter sports can be hard on your teeth. That’s why it’s important to wear your mouthguard when you’re getting the most out of the snow and ice. Mouthguards help prevent injuries to your teeth and provide protection for your jaw and mouth, too.

And a sport doesn’t have to involve snow and ice to be a winter hazard for your teeth. The combination of hard courts, flying elbows, and body contact make basketball a leader in the dental injuries competition. In fact, any sport which involves potential falls or personal contact is a good candidate for a mouthguard.

Mouthguards are available in several forms:

  • One-size-fits-all, pre-formed mouthguards can be found in drugstores and sporting goods stores.
  • “Boil-and-bite” models are warmed in hot water and then shaped when you bite down. The fit is somewhat more comfortable than a stock guard.
  • Custom-made guards from your dentist are precisely molded to your teeth and mouth, letting you speak and breathe more comfortably.

If you haven’t gotten a mouthguard yet, or your old high school guard was retired years ago, talk to Dr. Selena Marchan about a custom guard.  While the over-the-counter options are better than going unprotected, a custom mouthguard fits your teeth perfectly—and comfortably!

Get to the Bottom of Winter Sensitivity

That first breath of frosty air might be more alarming than invigorating when tooth pain and sensitivity makes being out in the cold an unpleasant experience. Sensitivity to cold air or warm winter drinks can be an important symptom, caused by a number of dental conditions such as:

  • Cracked teeth
  • Cavities
  • Exposed dentin (the layer of the tooth underneath your enamel)
  • Receding gums
  • Over-vigorous brushing

If the cold weather is keeping you indoors because of oral sensitivity, give us a call.

Even though this can be a very busy time of year, if you’re due for a checkup and cleaning at our Jacksonville office, or if you have any concerns about your teeth and gums, make time for your dental health. We want to make sure you’re ready to enjoy every frosty moment of the season!

Halloween: Candy, costumes, and more!

October 29th, 2025

All Hallows' Eve, more commonly known as Halloween, is a yearly event celebrated on October 31, and one that is anticipated by the young and young at heart all over the world. Some scholars claim that Halloween originated from Celtic festivals that honored the dead or that celebrated the harvest, while others doubt that there's any connection at all to Samhain (a Gaelic harvest festival.) Regardless of its origin, our team at the family dentistry office of Dr. Selena Marchan hopes that Halloween is fun and enjoyed by all of our awesome patients!

Trick or treat?

In North America, Halloween is predominantly celebrated by children who dress up in costumes, which range from scary to cute, who then go around the neighborhood knocking on doors asking "trick or treat", and they are given candy in return. Trick-or-treating is a time honored tradition, and though many parents groan at the pounds and pounds of candy collected by youngsters and fear for the health of their teeth, there are a few things you can do to help their teeth stay in great shape until the candy is gone:

  • Limit the amount of candy they can consume each day
  • Have them brush their teeth after eating candy
  • Avoid hard, chewy candies as they can stick in hard to brush places
  • Keep candy out of sight to reduce temptation
  • Don't buy candy too far in advance to limit pre-Halloween consumption
  • Help or encourage your children to floss

Halloween Fun

Halloween isn't just about gorging on candy; there are other events associated with this festive day including carving jack-o'-lanterns, painting pumpkins, decorating sugar cookies, bobbing for apples, going to haunted houses, or just curling up on the couch with a bowl full of popcorn and watching some classic, scary movies.

Halloween Around the World

Some countries, like Australia, frown upon Halloween, claiming it is an American event and not based in Australian culture, while others like Italy have embraced the fun and celebrate much as Canadians and Americans do. Mexicans have been celebrating this fun day since around 1960, and it marks the beginning of the Day of the Dead festival. Some countries in Europe have come late to the party, but since the 1990s, countries like Sweden, Norway, and Germany have started celebrating Halloween as well, and finding children in costumes or having ghosts hanging in windows has become commonplace.

Halloween is about fun; stepping outside our normal lives and donning a costume or gathering with friends to knock on doors and ask for candy is as much a part of our culture as hot dogs and barbecue on Labor Day. Have a safe and happy Halloween from the team at Selena L. Marchan, DMD, PA,!

Oral Health during Pregnancy

October 22nd, 2025

Pregnancy can be one of the most exciting times in a woman’s life, as you eagerly wait for the birth of the new addition. Needless to say, pregnancy comes with a lot of responsibilities. Everything you do to your own body can affect your baby’s health, so you eat right and try to avoid anything that could harm your baby.

You may not realize it, but even your oral health affects your baby. You have a lot to worry about during this time in your life, but it’s important not to let your oral health slide. Maintaining good routines before and during pregnancy can improve the health of your baby.

Gum Disease and Pregnancy

Gum disease includes gingivitis and the more severe condition called periodontitis. Pregnancy gingivitis is a condition that results from bacteria in your teeth. Symptoms include gum inflammation and bad breath. If it progresses to periodontitis, your baby is at higher risk for preterm delivery and low-birth weight. You can also develop pregnancy tumors, or pyogenic granulomas, which can interfere with speaking and eating. Throughout pregnancy, continue to visit Dr. Selena Marchan at your regularly scheduled appointments to look for signs of gum disease.

Pregnancy and the Role of Our Office

Make an appointment with Dr. Selena Marchan at our Jacksonville office when you first learn that you’re pregnant, especially if you have unresolved oral health issues. If possible, try not to schedule necessary treatment during the first trimester or second half of the third trimester.

Oral Health Care Habits to Follow

Maintain a normal good oral health care regimen, which includes brushing your teeth at least twice daily with a fluoride toothpaste and soft toothbrush, and flossing daily. If your regular regimen is not up to par, now is a good time to develop good habits. You can use an unflavored toothpaste if you have morning sickness and regular toothpaste makes you feel nauseous. Also, rinse your mouth with water or mouthwash if you experience morning sickness to prevent acid damage to your teeth.

What is a crown?

October 17th, 2025

If you have never had a crown before, you might be wondering why crown treatment is best, what the procedure involves, and which type of crown to choose. Let’s get down to the basics of crowns!

A crown is the best way to treat many dental conditions, either to strengthen and save the tooth or to improve its appearance. We might suggest a crown if you have any of the following conditions:

  • A filling that needs to be replaced, without enough tooth structure left to fill properly
  • A tooth that is fractured or broken, or so weak that it might fracture
  • A recent root canal
  • An implant
  • A bridge which needs a crown to serve as the base for attachment
  • A tooth that is discolored or irregularly shaped

On your first visit to our Jacksonville office, Dr. Selena Marchan will prepare the tooth that will be receiving a crown. A tooth might have to be built up if there isn’t enough of the original tooth left, or the top and sides of the tooth will be shaped down so that the crown fits smoothly and evenly with your other teeth. An impression will be made and sent to a dental lab so that a crown with the perfect fit for your tooth and mouth can be created. A temporary crown will be put in place to protect your tooth while the final crown is fabricated.

 The permanent crown is a cap which covers your tooth. It can be made of various materials, which all offer different advantages:

  • Metal Crowns—made of gold, platinum or base metal alloys, these are the longest lasting. Because of their metallic color, they are often chosen for back molars where they are less visible.
  • Porcelain Over Metal—because the color of the porcelain is matched to your natural teeth, these crowns look very realistic. Porcelain is more fragile than metal, so there is the possibility that they won’t be as durable.
  • Resin—less expensive than other options, but these crowns are more fragile and do not wear as well.
  • All Porcelain/All Ceramic—the most realistic looking option, especially for front teeth, and also suitable for anyone with a metal allergy. They are, again, not as strong as metal crowns, and can be subject to damage.
  • Stainless Steel—often used for baby teeth or as a temporary crown for adult teeth.

We’ll discuss your options and help you decide on the best type of crown for you. When the crown is finished at the dental lab, you will have one more visit where the crown will be secured in place. We will make sure your bite is comfortable and the color and appearance of the crown are satisfactory. We will also give you instructions for the next few days following the procedure, and can make adjustments if needed.

A crown is a perfect example of form and function working together: a crown maintains the beauty of your smile and preserves the health of your tooth. If you need a crown, we will be happy to talk to you about your best options for a strong, long-lasting, and natural smile.

What kind of toothbrush and toothpaste should my child use?

October 17th, 2025

Dr. Selena Marchan and our team know that as a parent, you want your child to be as healthy as possible. By now, you probably know that your son or daughter’s oral health plays a huge role in overall health.

When there are so many toothpaste ads and different styles of brush to choose from, it can be difficult to know which will serve your child the best. We recommend you break down the decision process to make it simpler.

First, your child’s age and stage of development are vital to consider. Until about the age or 12, your youngster may not be prepared to brush or floss adequately alone, due to dexterity issues. If that’s the case, it can be easier to use a battery-powered toothbrush to improve the quality of brushing.

Next is to select the right size of toothbrush head to fit your child’s mouth. As a general rule, the head of the toothbrush should be a little larger than the upper portion of the child’s thumb.

Flossers are great for children and easy to use. They have handles and a horseshoe shape on one end with floss in between. Your child can choose a color he or she likes as well as the handle size, shape, etc.

Not only are there many brands of toothpaste to choose from, there are also many different ingredients that offer varying benefits. Kids are at high risk for developing cavities so you want to make sure the following ingredients are in your child’s toothpaste if you wish to avoid problems later on.

Sodium fluoride is the standard ingredient for cavity prevention, while stannous fluoride is anti-bacterial and anti-cavity. Anti-sensitivity toothpastes often contain potassium nitrate, and triclosan can be found in one particular brand for anti-bacterial action.

Fluoride should not be ingested, so if your child can’t spit yet, use a toothpaste that contains xylitol. This is a natural sweetener and should be the first ingredient listed on the tube.

Now comes the fun part: choosing a flavor! Your little one may sample different flavors and select the one he or she likes the best. A youngster is more likely to adopt good brushing habits if the flavor is appealing.

Don’t hesitate to speak with Dr. Selena Marchan if you need to make an appointment at our Jacksonville office, or if you have any questions about toothpastes or toothbrushes.

Year-End Insurance Reminder

October 16th, 2025

Dr. Selena Marchan, as well as our team at Selena L. Marchan, DMD, PA,, would like to give those patients with flex spend, health savings, or insurance benefits a friendly end of the year reminder that it’s high time to schedule your dental visits so you optimize your benefit.

Now is the time to reserve your appointment with us. Space is limited and we tend to get busy around the holidays, so don’t wait to give us a call at our convenient Jacksonville office!

Finding the Right Dental Products for Your Child

September 24th, 2025

Dr. Selena Marchan and our team know how overwhelming it can be to pick the right dental products for your children. When you visit the dental aisle at the grocery store, you see too many options to choose from. We want to help you make an informed decision based on your son or daughter’s needs.

First, you should consider your child’s age and where he or she is in terms of development. Most kids are unable to floss properly until around 12 years of age because of the necessary dexterity. If your youngster is under 12 years old, make sure to assist with flossing every night.

Another option is to use flossers for children. This will make the exercise a bit easier for your little one, because flossers have different-sized handles to fit all ages of hands.

When you’re looking for a child’s toothbrush, the head should be a little bigger than the top portion of your son or daughter’s thumb. If a toothbrush is too big, it won’t be able to reach small areas in the mouth properly. Battery-powered toothbrushes are also recommended because they improve overall brushing quality for both adults and children.

If your child is too young to spit, he or she should use toothpaste without fluoride. Small children tend to swallow toothpaste, even when they don’t intend to. Try looking for a toothpaste that has xylitol listed as the first ingredient. This is a natural sweetener that is beneficial to teeth.

You should also try to identify a flavor that appeals to your child. Same as adults, children like to brush more if they enjoy the flavor that lingers in their mouth after brushing.

It’s smart to look at the ingredients in a toothpaste for the benefits your child needs. Some toothpastes contain sodium fluoride, which fights effectively against cavities. If your child has a sweet tooth, or has already had a cavity, we recommend buying a toothpaste with this ingredient.

Stannous fluoride is another popular ingredient that discourages cavities and includes anti-bacterial properties. You should also watch for the ingredient triclosan, which also suppresses bacteria. These ingredients are both recommend for children who have a high risk for cavities.

Anti-sensitivity toothpaste should also be easy to find in the dental aisle of the store. It contains potassium nitrate to help with sore gums and teeth.

If you’re still unsure which dental products your child should be using, contact our Jacksonville office. Once we have general information about your child and his or her dental health, we can guide you in the right direction.

When it comes to picking the right toothbrush, toothpaste, floss, and mouthwash for your child, Selena L. Marchan, DMD, PA, is always here to help.

Is There an Act Three for Our Teeth?

September 17th, 2025

Act One: Those 20 adorable baby teeth which begin arriving when you’re about six months old and are probably gone by the time you’re twelve.

Act Two: The 32 (if you have all your wisdom teeth!) adult teeth which start showing up around the age of six, and need to last the rest of your lifetime. Unless there’s an . . .

Act Three: Where science has discovered a way to repair damaged teeth or create replacements for lost teeth that would look and function just like our original teeth.

Sounds like science fiction, doesn’t it?

In biological terms, of course, we’re not there yet. But teams of scientists around the world have been working toward just this goal—the ability to repair a tooth with its own biological material or even grow a new tooth when an adult tooth is seriously damaged or lost.

Because the pulp—the living tissue inside each tooth—contains dental stem cells, some researchers are studying whether these cells can be used to regenerate the living pulp inside a damaged tooth. Even more exciting, there’s research being done into the possibility of using these stem cells to rebuild an entire tooth—pulp, dentin, and hard enamel exterior. Because the supply of usable dental stem calls is quite small, and process of guiding these cells to create all the varied parts of the tooth is quite complex, this research is in its early stages.

In other studies, scientists have focused on tooth regeneration by studying the teeth of other species. Mice, for example, have front teeth with open roots. This allows these teeth to keep growing up as they wear down, because stem cells inside mouse gums are always working to create new tissue. Even though our teeth are not exactly comparable (no open roots in human teeth!), finding out just how this tissue regeneration works in mice and other animals might help find an answer for human tooth regeneration.

Right now, these scientific goals are just that—goals for a future day. But in the meantime, your quality of life doesn’t need to suffer when you lose an adult tooth. You can enjoy a third act right now with dental implants.

Cosmetic concerns aren’t the only reasons why you want your complete smile restored in the event of a lost tooth. A missing tooth can lead to many unpleasant consequences:

  • Speaking and eating can become more difficult.
  • Lack of stimulation from biting and chewing can cause the bone beneath the lost tooth to shrink.
  • Other teeth can shift to fill the gap left behind, which can affect tooth, bite, and jaw alignment.
  • Loss of teeth can lead to loss of confidence.

Unlike dentures or bridges, dental implants are designed to function just like your natural teeth.

The post, or base, of each implant fuses with the bone in your jaw, acting as a “root” for the implant. Once the post has fused with the bone around it, a crown designed to match your other teeth in shape and color is secured to the post. You can eat, speak, brush, floss, keep your bone healthy, and smile confidently just as you did before.

Will biological replacements be ready for your third act in the near future? Probably not. But that’s not to say this will never be possible! In the meantime, take care of your teeth with daily brushing and flossing, eat a dental-healthy diet, and visiting our Jacksonville office as recommended.

You do your best to keep your teeth intact and in place—but if you lose one through trauma or decay, talk to Dr. Selena Marchan about an implant. Because in any stage of life, the most important result is the happy ending a healthy and confident smile brings you!

How many times a day should I floss?

September 10th, 2025

Flossing is one of the most important parts of your oral care routine. Many patients know they need to do it but find it difficult to fit into their busy lives. Well, here's the good news: flossing once a day is enough if you're doing a good job!

Some patients like to brush before they floss and others like to floss before they brush. Some like to floss in the morning when they have more energy, others like to floss at night so they can go to bed with a clean mouth. Don't get hung up on any of this, the important thing is that you floss and floss effectively no matter when you do it.

Effective flossing contributes to oral health in these ways:

  • It reduces the chance of cavities between teeth, since cavities can only form on teeth covered with dental plaque and you're scraping that plaque away when you floss.
  • Along with brushing, it reduces the amount of time the plaque is left on your teeth, allowing them to be in a state of healing and remineralization for longer.
  • It removes plaque that accumulates at or below the gum line, aiding in the prevention of gum disease.

As you can see, flossing offers many benefits for such a simple and inexpensive technique. So if you're still wondering how much to floss, don't worry about it. Don't mistake the frequency of your flossing with the effectiveness of it. Choose a dental floss that you like and one time during the day when you can floss thoroughly and just do it! If you need more tips on how to floss correctly, ask Dr. Selena Marchan or any member of our Jacksonville team—we'd be glad to help you pick up this healthy habit!

September is National Gum Care Month!

September 3rd, 2025

Can you believe it's already September? At Selena L. Marchan, DMD, PA,, we know that gingivitis, the early stage of periodontal disease, can be difficult to recognize. Many people don’t recognize the warning signs, bleeding and swollen gums, as a precursor to gum disease. This month, a national campaign is under way to raise awareness about gum health and periodontal disease, and we wanted to help do our part to spread the word!

Dr. Selena Marchan will tell you early recognition and action are the most important steps to health gums, and ultimately a health body, too! Studies are published every year linking oral health, including the gums, to the health of other areas of the body, such as your heart. One of the most important steps to improving the care of your gums is recognizing the warning signs for gum disease. These can include:

  • Gums that appear red or swollen
  • Gums that feel tender
  • Gums that bleed easily (during brushing or flossing)
  • Gums that recede or pull away from the teeth
  • Persistent halitosis, or bad breath
  • Loose teeth
  • Any change in the way teeth come together in the biting position

If you happen to notice any of these signs with you or your child, please schedule an appointment at our convenient Jacksonville office as soon as possible. Dr. Selena Marchan and our team can take proactive steps to prevent gingivitis and gum disease, while showing you how to improve gum care in your or your child’s daily oral hygiene habits.

Celebrate Labor Day by Getting Away

August 27th, 2025

Labor Day honors the contributions that workers have made to this country, and for many Americans, the holiday is a great time to relax at home with family and friends. But there are quite a few people who celebrate the holiday by getting out of town, with an estimated 33 million people traveling more than 50 miles over Labor Day weekend each year. If you’re dreaming of a great Labor Day escape but you’re not quite sure where to go, here are a few ideas from our team at Selena L. Marchan, DMD, PA, to give you some travel inspiration.

Explore a National Park

On a national holiday like Labor Day, it’s only fitting to experience the beauty of America’s landscapes by heading to the nearest national park. If you’re confined to an office most days of the year, national parks can provide a relaxing and scenic escape, whether you’re by yourself, traveling with a group of friends, or bringing the whole family along. Depending on how close you live to the nearest park, you can stay for an afternoon or for longer than a week. With 58 parks located in 27 states, there are plenty of beautiful areas to choose from.

Chow Down in a BBQ Haven

Barbecuing is a popular Labor Day activity, but instead of sweating over your own grill or oven, try visiting one of the country’s BBQ capitals. U.S. News and World Report names Memphis as the top BBQ destination, with more than 80 BBQ restaurants in the city, most notably Corky’s BBQ and Central BBQ. Kansas City is also known for the sweet taste of its sauces, while central Texas is said to have perfected the technique of smoking tender and flavorful brisket.

Relax on the Beach

Many people think of Labor Day as the unofficial start of fall, which brings cooler temperatures, more rain, and for many people, an end to lazy days at the beach. End your beach days with a bang by taking a trip to one of the coasts or to a lakeside beach. For an added dose of festivity, find a city or town that celebrates the occasion with a fireworks display over the water.

Whether you’re looking to turn your getaway into a full week affair or you simply want to experience a quick escape, make the most of your holiday by changing your surrounding scenery. Happy Labor Day from the family dentistry practice of Dr. Selena Marchan!

What happens during my hygiene appointment?

August 20th, 2025

Regular visits to the dentist are important for people of all ages. Seeing Dr. Selena Marchan as recommended provides preventive care for oral diseases. If a disease is already present, early detection can prevent hefty dental bills and further damage to the teeth and gums. Once you have made the decision to visit Selena L. Marchan, DMD, PA,, you may ask yourself, “What happens during my hygiene appointment?”

Preparation

Arrive at your appointment a few minutes early and bring along any insurance cards or medical information. While it may seem irrelevant, a full medical history can be important, since certain conditions include symptoms that occur inside the mouth.

Initial appointment

In some offices, the first appointment is a screening appointment, during which a dental hygienist will go over your medical and dental history with you, assess the condition of your teeth and gums, then schedule a future appointment to complete the cleaning and any other treatments you may need. In other offices, the screening and cleaning will be done over the same appointment. The dental hygienist may:

  • Count your teeth
  • Clean your teeth by using a small tool to scrape them in order to remove plaque
  • Brush and floss your teeth
  • Apply a fluoride treatment using foam that sits on your teeth within a tooth mold, or a gel that can be “painted” on with a small brush
  • Inspect your teeth for cavities or signs of decay
  • Administer oral X-rays. You will be covered with a special blanket to protect your body and then given a small piece of plastic on which to bite.

Seeing the dentist

After the dental hygienist completes his or her portion of the appointment, the dentist will usually come in and inspect your teeth. After an initial inspection, the dentist may:

  • Perform a quick tooth count as well as a more thorough inspection, looking for signs of decay in and around the teeth
  • Use a small tool called a “probe” in order to check for signs of gum disease around the base of your teeth
  • Visually inspect the skin around your mouth, called the “mucosa”

If you need any further dental work completed, you will usually be required to make an additional appointment. To learn more about hygiene visits, or to schedule an appointment with Dr. Selena Marchan, please give us a call at our convenient Jacksonville office!

What are dental crowns?

August 13th, 2025

A dental crown is often called a “cap.” A dental crown covers all of the visible parts of the tooth and has many functions and reasons for placement.

There are several different types of crowns available at Selena L. Marchan, DMD, PA,. They vary in their material, appearance, and functionality. A PFM, or porcelain fused to high-noble metal, is the most common. A full cast, high noble metal crown is a gold crown, and a stainless-steel crown is meant to be temporary. The most natural-looking crown is one that is all porcelain. These are often used for front teeth.

Getting a crown typically requires two appointments. The first is a preparation with impressions, shaping, and placing a temporary. The impressions are either sent to a dental lab, where the process generally takes two weeks, or done in-office with a machine that can make a crown without needing a second appointment. These crowns are made from a high-quality solid block of porcelain. The shape of the tooth is constructed from a digital 3D image of your tooth.

To accurately determine which type of crown is best, you must first know why you need the crown and in what area of your mouth is it needed, which can be answered when you visit us at Selena L. Marchan, DMD, PA,. For instance, if you have a gold crown on the lower right and need a new crown directly above on the upper right, the best durability and long-lasting relationship is another gold crown.

If you need a crown on a front tooth, a gold crown may not be the best choice. A PFM has strength but is not ideal, as a dark line will appear at the gum line. A full porcelain crown is going to look as close to a natural tooth as possible, but will have less strength than a gold crown.

There are two types of porcelain crowns, depending on how they are made. A dental lab makes a full porcelain crown by baking layer upon layer to make the porcelain look like natural enamel. A full porcelain crown made in-office out of a solid piece of porcelain will have increased strength. However, the natural layered appearance is extremely difficult to achieve.

A crown is placed on a tooth when added strength is needed. Cracks, large broken-down fillings, or previous root canal treatment are all conditions where a crown is the standard care. The type of crown that is most appropriate depends greatly on location.

Sunbeams and Beaming Smiles

August 6th, 2025

Long days in the sun’s rays offer you lots of options for outdoor activities. Beach time? Vacation? Open-air concerts? Baseball, biking, board sports? No matter what plans you have for these sunny days in Jacksonville, we have some tips to keep your smile beaming.

Use Sunscreen

Sunscreen is good for all ages and skin tones, and it’s also designed to protect your smile. Lip tissue is thin and delicate, and can easily be damaged by the ultraviolet rays which cause skin cancer and premature aging. 

If your regular sunscreen isn’t suitable for your lips, there are many protective lip balms designed especially for your smile.

  • Make sure you get the proper level of protection. Dermatologists recommend lip balms with a minimum SPF (Sun Protection Factor) of 30.
  • Reapply at least every two hours, and sooner if your lips get wet or if you’re eating or drinking.

Protect Your Smile with a Mouthguard

Mouthguards help protect your teeth from damage caused by impact, whether from hard surfaces or hard elbows! Any time there’s a chance of a fall or a collision, a mouthguard is a good idea. Use your guard for:

  • Biking, in-line skating, skateboarding, or any activity where an unexpected fall is possible 
  • Contact or low-contact sports like baseball, basketball, and soccer, where bodies collide with equipment or other bodies

If you play organized sports, you might already own a mouthguard. If not, talk to Dr. Selena Marchan about over-the-counter options or a custom-fitted model. And if you wear braces, no need to stay indoors! There are mouthguards designed to protect your teeth, cheeks, lips, and braces. Ask the team at Selena L. Marchan, DMD, PA, for recommendations.

Hydrate

On hot days, our brains help regulate our body temperature. How? By sending the signal to start sweating! Some heat is transferred from our bodies to evaporate perspiration, which helps cool the skin. But that cooling perspiration comes at a cost—the water we lose through sweat can lead to dehydration. 

Water is essential for our health, and especially when it’s scorching outside. Drinking water throughout the day is healthier than drinking lots of water at one time, and your doctor can let you know the right amount of water for your body, since we’re not all built the same. A bottle of water doesn’t contain artificial ingredients, caffeine, or sugars, so it’s a great, healthy outdoor companion. 

More? Water is also great for your smile!

  • Water washes food particles and bacteria away from teeth and gums for fresher breath and a healthier mouth.
  • Most communities add fluoride to their water, and fluoride strengthens tooth enamel to help you fight cavities. If your local water supply isn’t fluoridated, talk to your dentist about other treatments which can provide fluoride’s cavity protection.
  • Hydrating helps prevent dry mouth. Normal saliva production doesn’t just keep the mouth moist for eating and speaking—it also protects our teeth and gums as it washes away food particles and helps counteract excess acidity in the mouth.

It’s easy to get distracted with summer activities and vacations—after all, they’re designed to be distracting! But don’t let your well-deserved fun in the sun distract you from your regular dental care. 

Regular dental exams catch small problems before they become larger ones, and cleanings make sure your smile is bright all summer long. If you’re overdue for a visit to Selena L. Marchan, DMD, PA,, make room in your schedule for a checkup.

Summer can be a time to relax, renew, and recharge. While you’re enjoying those extra hours of sun, take care of your oral health for a beaming smile which will look great on you any time of year!

Headaches: The Dental Connection

July 30th, 2025

Many people suffer through headaches for years without getting to the root cause of their problem. If you find yourself constantly popping painkillers to get through the day, it might be worth a trip to see a medical professional – but it may not be the person you think.

Talking to Dr. Selena Marchan can be a great start when dealing with chronic headaches, because dental issues frequently contribute to head pain. In fact, the American Academy of Craniofacial Pain estimates that 80% of headaches are caused by muscle tension, which often originates in the jaws.

What Do Tension Headaches Feel Like?

A tension headache can originate on one side of your head or can pervade your entire skull. Typically, tension headaches feel like a dull, throbbing ache inside your head. Some patients at our Jacksonville office report that they feel as though a metal band has been wrapped around their head and is causing significant pressure. Several common symptoms suggest that tension headaches may be caused by dental issues:

  1. Feeling as though your head or scalp is painful to the merest touch
  2. Experiencing a dull or throbbing pain behind the eyes
  3. Clicking or popping sounds in your jaw joints
  4. Grinding teeth or clenching the jaws, particularly in times of anxiety or during the night
  5. Feeling as though your jaw muscles are sore when you wake up from sleep

Dental Origins of Headaches

Several dozen muscles control your facial expressions, jaw movements, and motions such as swallowing. When these muscles are contracted for long periods of time, tension builds up within the muscle and can lead to headaches. This may happen if you clench or grind your teeth at night, your bite is misaligned, or you have muscle imbalances in the jaw or neck.

Dental Treatments for Tension Headaches

Fortunately, a trip to Selena L. Marchan, DMD, PA, can be a fruitful way to alleviate your headaches, including the following treatments:

  1. Bite. In many cases, correcting your bite through orthodontics releases the stress on your jaw and muscles, and reduces the frequency of headaches.
  2. Nightguard. A nightguard, which resembles a sports mouthguard, may also be helpful if you frequently grind your teeth or clench your jaws during sleep. Nightguards distribute the tension from your clenched jaws and reduce the possibility of dental damage.
  3. Physical therapy and relaxation. Correcting the posture of your shoulders, neck, and head may alleviate muscle tension associated with headaches.

The Best Brush of the Day

July 23rd, 2025

Imagine that you’re only going to brush your teeth once tomorrow. Don’t worry, we know you would never skimp on your dental hygiene like that, but let’s just pretend for a moment. When would be the best time to brush? When you wake up? During the day? Or perhaps before you go to bed?

Actually, whenever you choose to brush, you’ll receive important overall dental benefits as well as specific benefits tied to the time of day. Let’s explore your daily schedule to see why.

Brushing in the Morning

Brushing when you first jump out of bed produces several positive results.

  • Cleaning plaque from your teeth

Plaque is a sticky film made up of oral bacteria, food particles, and saliva. As you sleep, these oral bacteria multiply and produce acids which attack the minerals in your enamel, leaving weak spots which, over time, can become cavities. Brushing removes these bacteria and acids from your enamel before they cause serious harm.

Moreover, plaque hardens if it’s left undisturbed, turning into tartar in a relatively short time. And once plaque becomes tartar, it must be removed by a dental professional. Brushing first thing in the morning removes this plaque buildup and helps prevent tartar from forming.

  • Fresh breath

That bacterial growth we mentioned? It’s also responsible for morning breath. If nothing else, brushing when you wake up means greeting a fresh day with fresh breath, and that’s reason enough to pick up your brush in the morning.

Brushing During the Day

Brushing after meals and snacks also has a lot to recommend it.

  • “Leftovers” lead to cavities

Foods, especially foods rich in sugar and carbohydrates, are converted by oral bacteria into acids which weaken enamel and lead to cavities. When food particles remain in the mouth after a meal, bacteria have more time and more fuel to manufacture these acids.

  • Acidic foods also affect your teeth

If you have eaten something acidic, such as citrus fruits, sodas, or pickled anything, the acids from these foods can temporarily weaken the mineral strength of your enamel. But brushing immediately after eating or drinking acidic foods can damage weakened enamel. Better to rinse well with water and brush after half an hour or so.

Brushing at Night

Growing up, you probably received regular reminders to brush before bedtime—for several really good reasons:

  • Saliva production slows while you sleep

During the day, saliva helps to wash away food particles and neutralize acidity in our mouths. It also contains proteins and minerals which help keep tooth enamel strong. But as we sleep, saliva production slows dramatically, and our bodies can’t remove bacteria and acids as effectively.

  • Food particles fuel bacterial growth

If you haven’t brushed since morning, you’ve accumulated a whole day’s worth of food particles from meals and snacks. Remember, oral bacteria use the sugars and carbs we eat as fuel to produce the acids which attack our tooth enamel throughout the night.

  • Brushing helps prevent both of these problems

Brushing your teeth before bed not only cleans away the accumulated food particles of the day, but also eliminates the plaque and bacteria which would have a much easier time sticking to your teeth without that daytime saliva flow to wash them away.

So, When’s the Best Time to Brush?

In the morning, during the day, at night —there are solid advantages to brushing any time of day. The question isn’t so much when to brush as how often you should brush.

While many dental professionals consider brushing before bedtime as the most important brush of the day, brushing at least two full minutes, at least twice during a 24 hour period, is a necessity for basic dental hygiene. (And don’t forget to floss at least once each day.)

If you wear orthodontic appliances, if you’ve been eating sugary snacks, if you’re showing signs of gingivitis or getting more than your share of cavities, if you want to reduce the chance of plaque and tartar buildup, or if you simply want to make sure you’re doing everything you can to maintain your overall dental health, brushing after meals is also highly recommended.

Talk to Dr. Selena Marchan about your brushing habits the next time you visit our Jacksonville office. No need to use your imagination to plan your best brushing schedule. We have all the answers you need to help you brush your way to your best—and healthiest—smile!

Do I lose my wisdom if I lose my wisdom teeth?

July 16th, 2025

The third molars have long been known as your “wisdom teeth,” because they are the last teeth to erupt from the gums – usually sometime during the late teens to early twenties. This is a time in life that many consider an “age of wisdom”; hence the term, “wisdom teeth.”

Extracting the third molars does not have any effect on your actual wisdom … and Dr. Selena Marchan and our staff are sorry to say that holding on to them can’t make you smarter, either. So if you somehow feel that you became wiser and smarter when your wisdom teeth appeared, chalk it up to age rather than teeth.

In fact, you may just be showing how smart you are by having your wisdom teeth removed. Mankind once relied on the wisdom teeth to replace teeth that were damaged or missing, thanks to a poor diet. But dietary changes and advances in modern dentistry make it possible for many people to hold on to their teeth for many decades, which eliminated the need for third molars.

For many people, wisdom teeth cause nothing but problems: becoming impacted, irritating surrounding gum tissue, or even causing other teeth to become crooked or overlap. By removing them, patients often enjoy a lower risk of decay, infection, and aesthetic complications.

So rest assured that extracting your wisdom teeth will have no effect on your immediate or long-term intelligence.

Why are my gums shrinking?

July 9th, 2025

If you’ve noticed that your teeth have appeared to be longer, you may be suffering from gum recession. This is a common problem among adults, and can result from several factors. If gum recession seems to be happening in your mouth, schedule an appointment at our Jacksonville office. We will take a look and figure out the cause, and help you decide on the best treatment.

The first thing Dr. Selena Marchan will do is take measurements of the recession to see if the cause could be periodontal disease. Based on how much attached gingiva is present on the gums, a varying amount of gum recession will be present.

The less bone support you have for your teeth, the higher the chance of tooth loss will be. If you have a high likelihood of tooth loss, it’s critical to address the problem right away.

Gum recession can also be caused by stress-related issues that lead to jaw clenching and teeth grinding in the night. This added, ongoing pressure puts extra stress on your teeth, which flexes them at the gum line.

If this happens over a long period, microscopic breaks in your enamel will cause your gum line to move away from your teeth. An occlusal guard may serve as a solution to gum recession caused by teeth grinding. Talk to Dr. Selena Marchan about this option if you consistently wake up with jaw pain, headaches, or uncomfortable pressure on the sides of your face.

The way you brush and floss your teeth may also cause gum recession. If you’re an aggressive brusher, make sure to purchase toothbrushes labeled “soft.” It’s best to brush your teeth in a circular motion in order to sweep over all your gum lines and remove the most plaque. Generally, brushing in a straight line can leave spots of plaque that lead to periodontal disease, which is a common cause of gum recession.

There are several options for treatment of gum recession. Depending on the cause, Dr. Selena Marchan will talk with you to decide the best treatment plan. Care may involve a deep cleaning or an antibiotic treatment. In serious cases, treatment might involve pocket-depth reduction, a soft tissue draft, or gum regeneration surgery.

These are just a few of the many potential causes of gum recession and how we can treat the problem. Unfortunately, gums do not grow back, and the consequences of ignoring this condition can be painful and time-consuming.

Please call our Jacksonville office to schedule an appointment if you’ve noticed any elongating of your teeth or recurring irritation of the gums. We will work as hard as possible to help rid you of your gum recession and prevent it from getting worse in the future.

Happy Fourth of July

July 2nd, 2025

Every year, Americans all over the world celebrate the birth of the country and its independence on the Fourth of July. There are countless ways that people celebrate and they range from community parades and large scale gatherings to concerts, fireworks displays, and smaller scale celebrations among family and friends. For some people, July 4th is synonymous with baseball, while for others it is all about the beach of barbecues. However you celebrate, you can be sure that red, white, and blue is visible everywhere throughout the area.

The Beginnings of Fourth of July Celebrations

Although it wasn't officially designated as a federal holiday until 1941, the actual tradition of celebrating Independence Day goes back to the time of the American Revolution (1775 – 1783). At the time of the American Revolution, representatives from the 13 colonies penned the resolution that ultimately declared their independence from Great Britain. The continental congress voted to adopt the Declaration of Independence on July 2nd of 1776. Two days later, Thomas Jefferson's famous document that is now known as the Declaration of Independence, was adopted by delegates representing the 13 colonies.

First States to Recognize the Fourth of July

In 1781, Massachusetts became the first state (or commonwealth) whose legislature resolved to designate July 4th as the date on which to celebrate the country's independence. Two years later, Boston became the first city to make an official designation to honor the country's birth with a holiday on July 4th. In that same year, North Carolina's governor, Alexander Martin, became the first governor to issue an official state order stipulating that July 4th was the day on which North Carolinians would celebrate the country's independence.

Fun Facts About the Fourth of July

  • The reason the stars on the original flag were arranged in a circle is because it was believed that would indicate that all of the colonies were equal.
  • Americans eat over 150 million hot dogs on July 4th.
  • Imports of fireworks each year totals over $211 million.
  • The first “official” Fourth of July party took place at the White House in 1801.
  • Benjamin Franklin didn't want the national bird to be the bald eagle. He believed that the turkey was better suited to the coveted distinction. John Adams and Thomas Jefferson disagreed with him, and he was outvoted, so the bald eagle became the official bird of the United States.

For many, the tradition is something entirely different. Along the coastal areas of the United States, people may haul out huge pots to have lobster or other types of seafood boils. Others may spend the day in the bleachers at a baseball game, or at a park, cooking a great traditional meal over an open fire. No matter how or where you celebrate, one thing is certain: all Americans celebrate July 4th as the birth and independence of our country.

Dr. Selena Marchan and our team at Selena L. Marchan, DMD, PA, wish you a safe and happy Fourth of July!

Fluorosis: What is it?

June 25th, 2025

Many people think dental fluorosis is a disease, but it’s not; it’s a condition that affects the appearance of your tooth’s enamel, not the function or health of the teeth. These changes may vary from tiny, white, barely noticeable spots to very noticeable staining, discoloration, and brown markings. The spots and stains left by fluorosis are permanent and may darken over time.

Dental fluorosis occurs in children who are excessively exposed to fluoride between 20 and 30 months of age. Only children ages eight years and younger can develop dental fluorosis. Why? That is the period when permanent teeth are still developing under the gums. For kids, fluorosis can cause significant embarrassment and anxiety about the appearance of their teeth. No matter how much they might brush and floss, the fluorosis stains do not go away.

Many well-known sources of fluoride may contribute to overexposure, including:

  • Fluoridated mouth rinse, which young children may swallow
  • Bottled water which is not tested for fluoride content
  • Inappropriate use of fluoride supplements
  • Exposure to water that is naturally or unnaturally fluoridated to levels well above the recommended levels

One way to reduce the risk for enamel fluorosis is to teach your children not to swallow topical fluoride products, such as toothpaste that contains fluoride. In fact, kids should use no more than a pea-sized amount of fluoride toothpaste when brushing, and children under the age of two shouldn’t use fluoride toothpaste at all.

Dental fluorosis can be treated with tooth bleaching, microabrasion, and conservative composite restorations or porcelain veneers. Please give us a call at our office to learn more or to schedule an appointment with Dr. Selena Marchan.

Warning Signs of Impacted Wisdom Teeth

June 18th, 2025

When your wisdom teeth start to emerge it can definitely be painful, but it can be even worse if your wisdom teeth become impacted. Impacted wisdom teeth are trying to erupt but are unable to do so because there is not sufficient room for them to emerge. This usually means that your wisdom teeth are painfully lodged in your jawbone.

While you may not see any real signs of the emerging wisdom teeth when they are impacted, what you can’t see can still definitely hurt you. Some of the indicators of impacted wisdom teeth are listed below.

  • Jaw Pain: Pain in the back of your jaw is a common indicator of impacted wisdom teeth. The pain often concentrates in the area around your gums.
  • Changes in the Mouth: You may notice some changes in your mouth when you have impacted wisdom teeth. Reddish gums, swelling in the jaw, bleeding gums, and bad breath can all be indicators that you are dealing with impacted wisdom teeth.
  • Headaches: If you suddenly start having headaches, especially at the same time as some of the other issues mentioned above, they may indicate impacted wisdom teeth.
  • Chewing Issues: Problems with chewing normally can indicate impacted wisdom teeth. If you are having trouble making the chewing motions because your mouth won’t quite open and close as easily as it used to, impacted wisdom teeth may be the culprit.

The Solution

If you are suffering from impacted wisdom teeth, the best solution is usually going to be removal. This is not a problem that will resolve naturally, and in fact, your pain and other symptoms may worsen as your wisdom teeth become increasingly impacted. At Selena L. Marchan, DMD, PA,, Dr. Selena Marchan can review the details of wisdom teeth removal surgery with you and help you determine if this is the best solution for your situation.

Celebrate Your Dad's Smile

June 11th, 2025

Father’s Day is coming up, and, just in case your dad has enough ties, we have some gifting suggestions for you. Here’s a selection of gifts large and small tailored to your dad’s interests and his dental health.

  • The Outdoor Dad

If your dad is happiest out camping, or his most relaxed at the lake fishing, or gets rid of stress with a 20-mile hike, help your dad stay happy, relaxed, and stress-free with an emergency dental kit for any unexpected problems which might crop up during his adventures.

You can find these lightweight kits in sporting stores and online. Supplies like cotton rolls, dental floss, oral pain relievers, a dental mirror, and even temporary fillings are included, because, as your dad no doubt told you, it’s always best to be prepared!

  • The High-Tech Dad

For the dad who’s first with the latest in smart phones and tablets, a new smart toothbrush might tick all the boxes.

Modern electric toothbrushes have plenty of options for the tech-savvy. They come with different settings for brushing and massaging. They can let your dad know if he’s brushed long enough (two minutes, please!), if he’s brushing too hard, or when the brush head needs to be retired. Smart models even link to apps, which can, among other things, map out any missed spots in his brushing coverage or suggest more effective brushing angles.

  • The Dad on the Go

With his active life, any gift which makes your dad’s busy schedule run more smoothly is a good thing—such as a portable kit filled with dental necessities.

A travel toothbrush, a small tube of his favorite toothpaste, a compact mirror, dental picks, dental floss, and a mini-bottle of mouthwash are great basics for a confident smile any time of day. Put everything in a sturdy lightweight travel bag. And don’t forget to include a pack of sugarless gum! Sugarless gum helps increase saliva flow (for better hydration) and decrease oral acidity (to help prevent enamel erosion).

  • The Dad with Gourmet Taste

If your dad has foodie tastes, a thoughtfully curated gift basket is a great idea for pleasing his palate and supporting his dental health.

Include items like cheeses, which are full of calcium and phosphorus for strong teeth. Fresh fruits provide vitamins for healthy teeth and gums. Nuts offer plenty of tooth-healthy minerals and vitamins, as well as packing a protein punch. For your dad’s sweet tooth, dark chocolate (at least 70% cacao) is a great source of antioxidants, iron, zinc, magnesium and other valuable minerals. It’s lower in sugar content, and some studies suggest that dark chocolate has cavity-fighting properties and supports gum health.

  • The Athletic Dad

He can deke the goalie, throw a perfect spiral, and hit those threes from downtown. Or, at the very least, he gives his favorite sport his best shot! If your dad has some of his happiest moments, win or lose, on the ice, the gridiron, the court, or any other sporty venue, consider a custom mouth guard to protect his winning smile.

Custom guards are more comfortable than store-bought options because they are molded to fit the user’s teeth and mouth precisely. This is especially helpful for those with dental work like braces or bridges. And, because the fit is custom, breathing and talking are easier.

  • The Picture-Perfect Dad

Your dad’s smiles light up family photos! And if he’s ever expressed an interest in lightening and brightening that beautiful smile, a professional whitening treatment might be a perfect gift.

Professional whitening at our Jacksonville office is the most effective way to brighten teeth, with results which are generally faster and more long lasting than over-the-counter treatments. And it’s done with your dad’s dental health in mind, with a checkup to make sure his teeth are in perfect shape before whitening, and with protective measures in place for sensitive mouth and gum tissue.

Of course your dad will appreciate another tie, or any other traditional gift, because you give it to him. But just in case you’re looking for something a little different to celebrate Father’s Day, choose a dental-healthy gift designed with your dad in mind—so you can celebrate his smile for years to come!

June is National Smile Month: Show off your smile!

June 4th, 2025

The community health awareness group Oral Health America has reported that 82 percent of adults are unaware of the role that infectious bacteria can play in tooth decay or cavities, and almost three out of five children aged 12 to 19 have tooth decay. Since June is National Smile Month, Dr. Selena Marchan and our team at Selena L. Marchan, DMD, PA, thought we’d remind our patients about the importance of good oral hygiene visits between office visits.

To keep your family’s smiles healthy and beautiful for years to come, be sure to:

  • Brush at least twice a day with fluoride toothpaste
  • Floss every day to clean between your teeth
  • Eat a healthy, well-balanced diet
  • Reduce your intake of sugary foods and drinks
  • Visit Dr. Selena Marchan for scheduled appointments

If you want to know more about healthy home care habits, feel free to ask our team at your next appointment, or ask us on Facebook!

Should Adults Continue Fluoride Treatments?

May 28th, 2025

Many adults wonder if they should continue to receive fluoride treatments. Our team at Selena L. Marchan, DMD, PA, wants to set the record straight about the usefulness of fluoride treatment for adults.

There are several reasons fluoride treatments could be beneficial to you as a grownup. If you have a high risk for cavities, topical fluoride applications can cut down on that risk.

If you’re experiencing gum recession that’s softening your enamel, fluoride treatments can slow down that process. Fluoride treatments may also protect expensive restorative work on crowns or bridges that may be adversely affected by plaque.

In addition, fluoride can also protect teeth in adults who have orthodontic braces or who sometimes neglect to keep up with daily oral hygiene regimens such as flossing and using mouthwash.

Do you have sensitive teeth? Consuming foods that are highly acidic or using teeth-whitening products can lead to irritated gums. Fluoride treatments remineralize your enamel and reduce sensitivity.

If you’ve undergone radiation treatment for cancer, fluoride can help restore any dry-mouth damage that may have developed during that time. Saliva acts as a buffer against the foods we eat, and without enough of it you may be more likely to get cavities.

In general, fluoride treatments are not always necessary for adults, but they can be beneficial to your overall oral hygiene depending on your situation. If you fall into one of the general areas listed above, ask about a fluoride treatment during your next visit at our Jacksonville office.

We can also go over your options to treat other issues you may experience in terms of your oral health. Until then, make sure to take care of your teeth properly and use toothpaste or mouthwash that contains fluoride on a regular basis.

Memorial Day: Parades, remembrance, and the unofficial start of summer!

May 24th, 2025

“The purpose of all war is peace.” - Saint Augustine

Fire truck sirens, baton twirlers, marching bands covering patriotic tunes, colorful floats, costumes, and millions of red, white, and blue American flags being waved in the air on a beautiful day in late May, that is what Memorial Day is all about. It is a federal holiday celebrated with town parades, remembrance, and a sense of unity and community togetherness.

Our team at Selena L. Marchan, DMD, PA, wants to take this time to wish you and your family a happy Memorial Day, as well as pause for a moment to reflect on what this holiday means and how it has changed over time. No, this is not a history lesson, but just a couple of thoughts and observances for you to take with you on your way to the next barbecue.

On the last Monday in May, America observes Memorial Day as a time to remember and celebrate the men and women who have lost their lives while serving our country in the Armed Forces. The holiday originated after the Civil War; at that time it was known as Decoration Day. While holidays like Thanksgiving, Christmas, and Easter remain the same from year to year, Memorial Day has changed over time, and in the 21st century we observe a far different holiday than what Americans did after the Civil War, or even the World Wars.

While many people place flags at cemeteries and visit national memorials in order to honor those who have passed away serving the country, Memorial Day is also a time for family barbecues, pool parties, trips to the beach, blockbuster movies, long weekend getaways, and fireworks. In America, Memorial Day has come to represent the unofficial start of the summer – a long, sunny, warm weekend devoted to family togetherness, outdoor events, and community.

It is time to load up the potato salad and the apple pie and head over to the neighbor’s house for their annual barbecue. And yes, contrary to popular belief, we do eat sweets, especially homemade apple pie! Everything in moderation, of course.

So whether you’re in the Jacksonville area or beyond, Happy Memorial Day to you and yours from Dr. Selena Marchan!

Should I use mouthwash?

May 23rd, 2025

Mouthwashes are commonly used as a part of a daily oral care regimen. Not only do they freshen breath, but some are capable of improving dental health too. Using a mouthwash daily can rinse fine debris away and out of reach while brushing. It can also make the teeth and gums more resilient to decay and disease.

Types of Mouthwashes

There are several types of mouthwashes available today that Dr. Selena Marchan and our team at Selena L. Marchan, DMD, PA, want you to be aware of. Some do little more than freshen breath and are known as cosmetic mouthwashes. These are ideal for quickly eliminating odors that linger after eating, drinking, or taking medication. Using a cosmetic mouthwash does not offer any health benefits.

Other mouthwashes offer more comprehensive benefits; they can potentially prevent tooth decay and gum disease. Mouthwashes that contain antimicrobial agents work by preventing the buildup of plaque that can lead to gingivitis and decay of the tooth enamel. However, it should be noted that the use of a mouthwash is never a substitute for regular brushing and flossing.

In some cases, prescription mouthwashes are necessary to treat patients with gum disease or who have undergone periodontal surgery. These specialty mouthwashes are designed specifically for the treatment of gum disease and should not be used outside of their intended use. The majority of mouthwashes require no prescription.

Tips for Choosing a Mouthwash

The choice to use a mouthwash and which one to use is between you and your dentist, depending on your individual oral health needs. If you determine that a mouthwash is right for you, look for one that contains fluoride, if possible. Fluoride provides an added layer of protection for your teeth, and helps them become more resistant to decay. As always, if you have any questions or concerns when choosing a mouthwash, please give our team at Selena L. Marchan, DMD, PA, a call for assistance in selecting the rinse that is best for you. Or, we invite to ask us during your next visit to our Jacksonville office!

Wishing all our moms a happy Mother’s Day!

May 7th, 2025

"Motherhood: All love begins and ends there." - Robert Browning

We would like to take this moment to thank all the great moms out there for being so great during their child’s visits to Selena L. Marchan, DMD, PA,. Whether it’s driving their kids to regularly scheduled appointments or for “being there” while their child is treatment, the moms who come to our office are all stellar individuals, so Dr. Selena Marchan and our entire staff would like you to know that we appreciate you all!

Happy Mother’s Day and enjoy your special day!

What’s an intraoral camera?

April 30th, 2025

One of the greatest features our team at Selena L. Marchan, DMD, PA, offers is the ability to see first-hand how we can help our patients. While X-rays help us detect any problems in your mouth and give us valuable information on what is bothering you, they often don’t give Dr. Selena Marchan a complete view of everything that is going on inside your mouth. With the use of an intraoral camera, we can see every aspect of your teeth and mouth with incredible detail, uncovering cracked or fractured teeth, excessive wear, carious lesions, cavities, or other issues that may be hidden. When we can discover oral problems early on, your treatment is much less invasive and often saves you money down the road.

An intraoral camera allows Dr. Selena Marchan to view clear, precise images of your mouth, teeth, and gums and allows us to make an accurate diagnosis.  With clear, defined, enlarged images, Dr. Selena Marchan and our team see details that standard mirror examinations may miss. It’s much easier to understand what is happening in your mouth if you can see the problem on a computer monitor, and it means faster diagnosis and less chair-time for our patients!

Intraoral cameras are small, about the size of a dental mirror, and emit a light onto the tooth. The tooth will emit a color that lets Dr. Selena Marchan determine if the tooth is healthy or diseased. Intraoral cameras also allow us to save your images on our office computer to provide a permanent record of treatments. These treatments can be printed for you, other specialists, and your lab or insurance companies.

For any questions about the intraoral camera, we encourage you to ask Dr. Selena Marchan or our team during your or your child’s next visit or by giving us a call at our convenient Jacksonville office.

Playing “Tooth or Dare”

April 23rd, 2025

Our teeth perform several vital roles for us. We use them to bite and chew, to help form words, to support our facial structure. And never underestimate the power of a smile!

But once you try to expand that job description, you are asking for trouble. Using your teeth for tasks they were not designed for is a game no one wins. What are some of the worst moves you can make? Putting your teeth into play as:

  • Ice Crushers

Crunching hard objects like teeth and ice cubes together can have one of two results—the ice will give, or your tooth will. If your tooth is the loser, you can expect cracks, fractures, worn enamel, and even dislodged crowns and fillings. If you’re tempted to chew on the ice in your drinks, try asking for a straw or using slushy ice instead. (The craving for ice can also be a symptom of other medical conditions—check with your doctor for more on that subject.)

  • Bottle Openers

If ice vs. teeth is a bad idea, metal vs. teeth must be a really bad idea. Those sharp hard metal caps can be difficult to remove even with a bottle opener. Don’t take a chance on chipped, fractured teeth and lacerated gums to get to that beverage faster/work around a lost opener/impress your friends.

  • Nut Crackers

Just because nuts offer more protein than ice doesn’t make their shells any safer to crack with your teeth. Besides the danger of fractured teeth and eroded enamel, biting on whole nuts can produce sharp splinters of shell that can damage delicate gum tissue. By all means, enjoy nuts—they pack a lot of nutrition in a small package. But buy them already shelled, or invest in a nutcracker.

  • Cutting Tools

Teeth aren’t meant to be scissors or utility knives. Even if you are trying to bite through the top of a relatively soft bag of chips, or a piece of duct tape, or a tag that just won’t come off your new clothes, you are putting pressure on your teeth in ways that they are not meant to handle. Don’t take a chance on chips and fractures.

  • A Helping Hand

Using your teeth to hold the straps of your heavy bag, or the leash of your well-trained pet—what could go wrong? How about an awkward fall? Or a squirrel? Or something that might possibly be a squirrel? Any fall or force that applies violent pressure to your teeth and jaw is a potential for dental disaster.

  • Stress Relief

You might grind your teeth or bite your nails whenever you feel nervous. Please find another form of stress relief! Grinding and clenching the teeth can lead to worn enamel, jaw pain, broken teeth and restorations, and a host of other problems. Biting fingernails is not only hard on your nails, but also introduces bacteria into your mouth and can cause damage to your tooth enamel.

If you grind your teeth at night, ask Dr. Selena Marchan about a nightguard during your next visit to our Jacksonville office.

This is real life, and you really don’t want to be playing “Tooth or Dare” with your dental health. Use your teeth for what they were designed for, and you’ll take home the grand prize—a lifetime supply of beautiful, healthy smiles.

Earth Day

April 16th, 2025

The idea for Earth Day was the brainchild of Gaylord Nelson, a senator from Wisconsin. He envisioned an Earth Day that would be a kind of environmental teach-in. The first Earth Day celebration took place on April 22, 1970, and a surprising 20 million people participated on that day. Ultimately, it became the largest organized celebration in US history.

Earth Day Over the Years

Over the years, the recognition of the day, and the number of people celebrating it all over the world, turned Earth Day into an international celebration. Because it is celebrated throughout the world, it is not only the largest international environmental observation, but it is also more widely celebrated than any other environmental event in the world. Today, Earth Day is celebrated in 175 countries where over 500 million people participate in celebrations.

The Earth Day Movement

The Earth Day movement is credited with developing the idea that people should “think green”. It encouraged congress to enact laws, including one that resulted in the creation of the Environmental Protection Agency. It also inspired the passage of the Endangered Species Act.

The Five R's and Their Importance

  • Reduce – Reduce by avoiding unnecessary purchases. Reduce your use of materials that wind up in landfills. Reduce the use of chemicals around your house. Reduce your use of disposable bags, plates, cups, eating utensils, and batteries.
  • Reuse – Instead of using plastic bags for your groceries or purchases, bring your own reusable bags. When you go to buy coffee at Starbucks, take a travel mug so you don't have to get your coffee in a disposable paper cup. Instead of storing food in disposable refrigerator containers, buy containers that can be washed and reused. Don't use regular batteries. Whenever possible, opt for rechargeable batteries that you can reuse.
  • Recycle – Most cities offer a recycling program to collect used bottles, cans, and newspapers. Recycling includes collecting recyclable materials that would otherwise be considered waste, sorting and processing recyclables into raw materials such as fibers and manufacturing raw materials into new products.
  • Re-buy – Make an effort to purchase things that are made through recycling. When purchasing furniture, look for items that are made from reclaimed wood. When buying paper for kids school work, computer printer paper, holiday cards, or anything else, make a point of purchasing recycled paper products. Instead of buying clothing at full retail price, shop for second hand clothing. You will save a lot of money by doing so!
  • Rethink – Rethink the way you do things so that you do them in an eco-conscious way at all times. Instead of driving to work alone, consider taking the bus or going in a carpool. Walk or ride your bike when you're only going a short distance. Plan your shopping trips and errand runs so that you can do everything on one day, and do it in a way where you can save time and gas.

Other ways to "think green" include growing your own food, composting yard waste and food scraps, or by participating in local recycling programs. Join a group like Freecycle so you can share your unneeded and unwanted possessions with people who can use them. Likewise, you'll be able to get things you need or want for free.

Earth Day teaches people that the planet belongs to everyone, so everyone is equally responsible for protecting it. Although Earth Day is an environmental celebration, our team at Selena L. Marchan, DMD, PA, wants to remind you that you don't have to wait until then to make changes that will allow you and your family to live a greener life.

Happy Earth Day from the team at Selena L. Marchan, DMD, PA,.

Thumb Sucking

April 9th, 2025

Learning to suck their thumbs is one of the first physical skills babies acquire. In fact, ultrasound images have revealed babies sucking their thumbs in the womb! Babies have a natural sucking reflex, and this activity is a normal way for your baby to soothe herself.

If your toddler still turns to her thumb for comfort, no need to worry. Most children give up this habit as they grow, and generally stop completely between the ages of two and four. But what of the child who doesn’t? Should you encourage your child to stop? And when?

When Thumb Sucking Becomes a Problem

After your child turns five, and certainly when her permanent teeth start to arrive, aggressive thumb sucking is something to watch for. This type of vigorous sucking, which puts pressure on the teeth and gums, can lead to a number of problems.

  • Open Bite

Our bites are considered normal when the upper teeth slightly overlap the lower where they touch in the front of the mouth. But with aggressive thumb sucking, teeth are pushed out of alignment. Sometimes this results in a condition called “open bite,” where the upper and lower teeth don’t make contact at all. An open bite almost always requires orthodontic treatment.

  • Jaw Problems

Your child’s palate and jaw are still growing. Aggressive thumb sucking can actually change the shape of the palate and jaw, and even affect facial structure. Again, orthodontic treatment can help, but prevention is always the better option!

  • Speech Difficulties

Prolonged thumb sucking has been suggested as a risk factor for speech disorders such as lisping, the inability to pronounce certain letters, or tongue thrusting.

The consequences from aggressive thumb sucking can be prevented with early intervention. What to do if you are worried?

Talk to Us

First, let us reassure you that most children stop thumb sucking on their own, and with no negative dental effects at all. But if your child is still aggressively sucking her thumb once her permanent teeth have started erupting, or if we see changes in her baby teeth, let’s talk about solutions during an appointment at our Jacksonville office. We can offer suggestions to help your child break the habit at home. There are also dental appliances available that can discourage thumb sucking if your child finds it especially hard to stop.

Work with your Child

  • Be Positive

Positive reinforcement is always best. Praise her when she remembers not to suck her thumb. Make a chart with stickers to reward every thumb-free day. Pick out a favorite book to read or activity you can share.

  • Identify Triggers

Children associate thumb sucking with comfort and security.  If your child turns to her thumb when she’s anxious, try to discover what is bothering her and how to reassure her. If she automatically sucks her thumb when she is bored, find an activity that will engage her. If she’s hungry, offer a healthy snack.

  • Talk about It!

Depending on her age, it might help your child to understand why stopping this habit is important. We are happy to explain, in a positive, age-appropriate way, just how breaking the thumb sucking habit will help her teeth and her smile.

Again, most children leave thumb sucking behind naturally and easily. But if what is a comfort for your child has become a concern for you, please give us a call. Dr. Selena Marchan will work with you and your child to prevent future orthodontic problems and begin her lifetime of beautiful smiles.

 

Oral Cancer Awareness Month

April 2nd, 2025

Happy Oral Cancer Awareness Month! We know oral cancer can be kind of a scary topic, but it’s worth using this opportunity to learn about the disease and spread knowledge so everyone becomes more aware. The more we know, the better we can work to prevent it!

Oral cancer is exactly what it sounds like: cancer that occurs anywhere in the mouth. It could occur on the tongue, the lips, the gums, the tongue, inside the cheek, or in the roof or floor of the mouth. Every  year, more than 8,000 people die from oral cancer. It’s a truly deadly disease.

The reason oral cancer scores a higher death rate than other common cancers such as testicular cancer, Hodgkin’s disease, thyroid cancer, cervical cancer, or even skin cancer, is because it often goes undetected until it's become too advanced and has spread to another part of the body.

So what causes this devastating disease? There is no clear answer, but some potential causes have been identified. By being aware of these, we can be alert and promote prevention of this illness:

  • Age: Most patients who develop oral cancer are above the age of 40. If you’re over 40, make sure your doctor checks for signs of oral cancer and that you stay on your dental hygiene regimen.
  • Tobacco: Excessive tobacco use, whether in the form of cigarette smoking or tobacco chewing, can be a substantial contributor and cause of oral cancer. So that’s another reason, among many, you should avoid tobacco.
  • Alcohol: Excessive alcohol consumption can put you at risk because alcohol converts into a chemical called acetaldehyde, which damages the body’s DNA and blocks cells from repairing the damage. When paired with tobacco, the dehydrating effects of alcohol make it even easier for tobacco to infiltrate mouth tissue.
  • Sun exposure: Your lips need SPF, too! Repeated sun exposure increases your risk of contracting cancer on your lips, especially the lower lip.
  • Diet: Not getting all the nutrients you need, from vegetables and fruits for instance, can weaken your immune system and make you more vulnerable to the disease.

Obviously, many of these causes relate to lifestyle choices, which we have control over. It's all about balance, being aware, and making small tweaks to our habits if we need to.

If you’re concerned that you may be at risk for oral cancer, give us a call to talk about a screening. And if you’ve been putting off a visit to our Jacksonville office, now is an excellent time to schedule one. Regular visits to the dentist can be the first line of defense against oral cancer!

Solutions for Dry Mouth (Xerostomia)

March 26th, 2025

Dry mouth, or xerostomia, is a common side effect of many medications. It can also be a side effect of cancer treatments, or the result of certain auto-immune diseases. Dr. Selena Marchan and our team at Selena L. Marchan, DMD, PA, will tell you that for most people, discontinuing their medication isn’t an option. The solution is two-fold: find ways to increase saliva production and eliminate specific things that are likely to increase dryness in the mouth.

Lack of saliva creates a situation in the mouth that allows harmful organisms such as yeast and bacteria to thrive. It may also make it difficult to swallow food, create a burning feeling in your mouth, or cause bad breath, among other problems.

Medications that are known to cause dry mouth include:

  • Anti-depressant drugs
  • Anti-anxiety medications
  • Drugs for lowering blood pressure
  • Allergy and cold medications — antihistamines and decongestants
  • Chemotherapy drugs
  • Medications to alleviate pain
  • Drugs used in the treatment of Parkinson’s disease

Saliva helps people digest their food. It also functions as a natural mouth cleanser. Xerostomia increases the risk you will develop gum disease or suffer from tooth decay.

Solutions for dry mouth

  • Carry water wherever you go, and make a point of taking regular sips.
  • Avoid oral rinses that contain alcohol or peroxide.
  • Chew sugarless gum or suck on sugarless hard candies that contain xylitol.
  • Limit your consumption of caffeine, carbonated beverages (including seltzer and sparkling waters), and alcoholic beverages.
  • Brush your teeth at least twice a day, and use dental floss or other inter-dental products to remove food particles that get stuck between your teeth.
  • Look for oral rinses and other oral hygiene products that bear the American Dental Association (ADA) Seal of Approval.
  • Brush your teeth and use oral rinses that contain xylitol. Certain gels and oral sprays are equally helpful. Biotene is one over-the-counter brand that makes products designed to treat dry mouth.
  • Make sure you get your teeth checked and cleaned twice a year. Dr. Selena Marchan will be able to examine your mouth for problems and treat them before they turn into something more serious.

You may not be able to solve your dry mouth problem altogether, but you’ll be able to deal with it by following these recommendations. You’ll be able to increase saliva production while reducing your risk of more serious dental problems. To learn more about preventing dry mouth, or to schedule an appointment with Dr. Selena Marchan, please give us a call at our convenient Jacksonville office!

Road Trip!

March 19th, 2025

The bags are packed, the trunk is loaded, the route is programmed into your GPS, the playlist is set, and your destination awaits! Sometimes there’s just nothing more appealing than a road trip. So, to make your trip even more enjoyable, here are some dental tips to help keep you feeling clean and fresh over the long haul.

  • Fuel Up

If you’re bringing some road snacks, be sure to include a few that will help clean teeth and freshen breath. Packing a supply of bottled water helps you stay hydrated, washes away food particles, and eliminates the bad breath caused by dehydration. Carrots and apples are not only nutritious and tasty, they apply a bit of gentle scrubbing action to your enamel as you chew. Traditional travel favorites like granola bars, beef jerky, and chips tend to stick to the teeth and provide cavity-causing bacteria a leisurely feast, so enjoy them in moderation. (If you’re driving, save the snacks for a rest stop—not only is eating while driving prohibited in some areas, it’s a distraction you don’t need on the highway.)

  • Roadside Diners

The occasional sticky, sweet, or chewy indulgence is fine at home, but when you have hours in the car ahead of you, you might want to turn down the pecan pie, the giant pretzels, and the roadside sea salt caramels. Again, cavity-causing bacteria love sugars and simple carbs, and food that finds its way into tooth crevices finds its way onto their menu. And, it goes without saying, passing up garlic, onions, and spicy foods will help your mouth feel fresher longer—and make your travel companions happier.

  • Car Wash

Bring a travel-sized toothbrush and tube of toothpaste with you for a quick cleaning when you stop for a break. A ventilated case will keep your brush dry (bacteria like damp conditions) and away from questionable surfaces. Disposable mini-travel brushes are available that come with a bead of cleaner pre-loaded and ready to use—you don’t even need water for a cleaner mouth and fresher breath. Food particles do not make good travel buddies so don’t forget dental picks or floss. And if you can’t brush right away, try a rinse with water or chew a piece of sugarless gum. Sugar free gum can help stimulate saliva production, which is a good way to wash away food particles and neutralize acids in the mouth.

  • Roadside Repair

Even with the best preparation, accidents can happen. That’s why you have a spare tire and a lug wrench in your trunk. It pays to be prepared for a dental emergency on the road as well. There are dental travel kits available in stores and online, or create one for yourself. Along with your first aid kit, pack dental picks, antimicrobial wipes, sterile gauze, a mirror, and any other supplies you think might come in handy. If you wear braces or a retainer, be sure to include dental wax in case of an uncooperative wire, and a case to protect and keep track of your retainer. And it’s a good idea to keep our Jacksonville office’s number on hand in case of emergency.

It’s a big country, and cruising the streets and highways is a wonderful way to explore it! But if you’re having any dental problems, be sure to see your dentist before taking off—after all your preparation, you don’t need a dental emergency to ruin your trip. Then, pack your bags, load your trunk, set your GPS, pick a playlist with something for everyone, and get ready to enjoy happy travels and healthy smiles!

Go Green for St. Patrick’s Day

March 12th, 2025

Millions of people, around Jacksonville and beyond, wear green on St. Patrick’s Day so they can show their spirit for the holiday and avoid getting pinched. While it may be easy for you to throw on a green shirt, sport a St. Patrick’s Day button, or wear a pair of emerald-hued shoes, if you’re an avid St. Patty’s Day enthusiast you may want to try something different this year. Dr. Selena Marchan thought of a few ideas that will help you take your holiday spirit to the next level:

Visit Chicago’s Green River

If you happen to be near the Windy City during St. Patrick’s Day or you’re thinking of planning a trip, don’t miss out on going downtown to watch the large-scale celebration that kicks off when the city dyes the river bright green. According to the Chicago Sun-Times, Chicago has been celebrating the holiday with this tradition for more than 50 years, with tens of thousands of people gathering annually to witness the mysterious dying process and the stunning result.

Don Green Face Paint

Just like an avid sports fan on game day, you can use green face paints to showcase your enthusiasm for this holiday. Avoid breakouts or allergic reactions by only using paints that are specifically meant to be applied to the skin. A little bit of face paint can cover a large area, so feel free to get creative and decorate the whole family on St. Patrick’s Day.

Eat Green All Day

Not a fan of green eggs and ham? With the increasing popularity of green smoothies, there’s no better time to get in on this health craze. To create a green smoothie without the aid of food coloring, you can simply blend a generous amount of a leafy green vegetable, such as spinach or kale, with the ingredients that you would typically use to make a smoothie, like fruit, ice, milk, or juice. Keep the trend going throughout the day by using those same vegetables to create a green soup, egg salad, or a batch of bright green pastries. As an added bonus, you’ll get a healthy dose of vitamins without changing the taste of most of these foods.

If your old holiday routine has gotten stale, leave your green T-shirt in the drawer and try one or all of these tips. Don’t be surprised if you have so much fun that you decide to start a new, annual St. Patrick’s Day tradition! Have a happy St. Paddy’s day from Selena L. Marchan, DMD, PA,!

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