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Just What Is a Cavity, Anyway?

March 4th, 2026

The grownups in your life encourage you to brush and floss, eat healthy foods, and visit us in the dental office for exams and cleanings. Why? Because we all want to help you prevent cavities.

So you might be wondering, just what are cavities? How do we get them? What do they do to our teeth? How can we prevent them? Let’s talk!

Our teeth need to be strong to bite and chew. That’s why they are protected by a coating called enamel, which is made up of very hard minerals. Enamel is the strongest part of our bodies—stronger even than our bones. But this doesn’t mean nothing can hurt it! And cavities, also called tooth decay, are one of the most common dangers facing our enamel.

So, what are cavities?

A cavity is a hole in your tooth enamel. If your tooth is not cleaned and repaired when a cavity is small, this hole can grow bigger until tooth decay reaches the inside of your tooth. Enamel doesn’t heal when it’s damaged, so you need to see a dentist to make your tooth healthy again.

How do we get cavities?

Bacteria are tiny little germs. Many kinds of bacteria live in our bodies, and some of them are quite helpful. The bacteria that cause cavities are not. These unhelpful bacteria join with our saliva and very small pieces of the food we’ve chewed to make a sticky film called plaque.

Like other living things, the bacteria in plaque need food. They get that food from the foods we eat, especially sugars and starches. As they eat, they change these sugars and starches into acids, and these acids attack the minerals that keep enamel hard and strong.

Because plaque sticks to our teeth, bacterial acids are able to make weak spots in enamel if the plaque isn’t brushed away. If you see a white spot on your tooth, which could mean that your enamel is losing minerals, and getting weaker.

What do cavities do to our teeth?

Over time, weak spots can grow bigger until there’s a hole in the enamel surface. If the cavity in your enamel is small, you might not notice it at first. But cavities can become wider and deeper, and even break through enamel to reach the inside of your tooth.

The inside of each tooth holds pulp, the part of your tooth that keeps it healthy. If tooth decay spreads to the pulp, it can cause more damage and infection, so it’s important to treat a cavity right away.

Dark spots on your enamel, a toothache, pain when you drink something hot or cold or when you bite down—these can be clues that you have a cavity, and you should visit us for an exam.

How can you prevent cavities?

Even better than treating a cavity is preventing one. Let’s make a list of some helpful do’s and don’ts for cavity prevention:

  • Do: Feed yourself foods that are good for you.

Foods like milk and cheese and many dark green vegetables have lots of calcium and vitamin D to help keep your enamel strong.

  • Don’t: Feed bacteria foods that are good for them.

Sugar and simple starches like potato chips are the kinds of foods bacteria like best, because they are easy to break down. This means more acids to attack your enamel.

This doesn’t mean you should never enjoy a treat! But eating lots of starchy snacks and drinking sugary sodas means more plaque, and more plaque can mean more cavities. If you’re eating something starchy or sweet, it’s a good idea to brush or rinse afterward.

  • Do: Brush at least twice a day, for at least two minutes, with fluoride toothpaste.

This is the best way to get rid of plaque, which builds up every day. And fluoride toothpaste even helps make your enamel stronger.

  • Don’t: Forget to floss.

Flossing takes a while to learn to do well, but it’s very important. Flossing helps prevent cavities between the teeth and near the gums.

  • Do: Visit our Frisco office for exams and cleanings.

Not only will we look for cavities, we’ll let you know the best way to brush and floss so you can get your teeth their cleanest. We even have special coatings called sealants that can protect your teeth from plaque.

  • Don’t: Feel bad if you get a cavity!

Some people are more likely to get cavities than others, even when they brush just right and eat healthy foods. If you have a cavity, we can remove decay and repair your tooth with a filling.

And one last thing to do: talk to Dr. Goodall if you have any questions about the best ways to protect your teeth from cavities. We have lots of suggestions to help you take care of your healthy, beautiful smile!

Pediatric Dentistry Q&A

February 25th, 2026

Today, Dr. Goodall and our team at More Than Smiles thought we would answer some of the most frequent questions about pediatric dentistry and oral health we hear from parents.

What constitutes a “healthy, balanced diet” for my child?

A healthy, balanced diet contains all the nutrients your child needs to grow, including one serving each of fruits and vegetables, breads and cereals, milk and dairy products, and meat, fish and eggs per day. Make sure your child limits snacking in between meals and limits how frequently they consume food or beverages that contain sugar, which is known to cause tooth decay. Besides pastries, cookies, and candy, sugars are usually found in processed foods such as crackers, cereals, and soda, as well as in condiments like ketchup.

Should my kid give up all foods that contain sugar?

Absolutely not, we simply recommend choosing and serving sugars sparingly. A food with sugar is safer for teeth if it is eaten with a meal, not as a snack. When your child chews during his or her meal, the saliva produced helps neutralize the acids that are found in sugary and starchy foods. Foods that are not easily washed away from your child’s teeth by saliva, water, or milk have more cavity-causing potential.

What causes cavities?

Many types of bacteria live in our mouths—some good, some bad. When these bacteria come into contact with sugary foods left behind on your child’s teeth after eating, acids are produced. These acids then attack the enamel, and eventually eat through the enamel and create holes in the teeth, which Dr. Goodall and our team call cavities, or caries.

How can I help my child avoid cavities?

This is a great question that we hear a lot. Make sure that your child brushes his teeth twice a day with fluoride toothpaste. Flossing daily is also important, as flossing can reach spots between the teeth that brushing simply can’t. And finally, we encourage you to schedule regular appointments with Dr. Goodall at our Frisco office so that we can check the state of your child’s teeth and gums, as well as provide a professional cleaning to protect him or her from cavities and gum disease.

What is the best way to clean my baby’s teeth?

We recommend you clean your baby’s gums after feedings with a damp, soft washcloth. This is even before your baby’s first tooth appears. As soon as his or her first tooth does appear, you may begin using a toothbrush with soft bristles and a small head. You can most likely find a toothbrush designed for infants at your local drugstore or ask us for one during your next visit.

What should I do if my child has a toothache?

First, we recommend rinsing the irritated area with warm salt water and placing a cold compress on his or her face if it is swollen. If you have any at home, give your child acetaminophen for any pain, rather than placing aspirin on the affected teeth or gums. Finally, give us a call as soon as possible to schedule an appointment with Dr. Goodall.

We hope that helps! Please give us a call if you have any questions or ask us next time you visit our office for your child’s appointment with Dr. Goodall! If you have any other questions, or would like to schedule an appointment, we would love to hear from you.

Let’s Talk About Fluoride

February 18th, 2026

So much of parenting is a balancing act. Making sure your child has enough play time and enough nap time. Crafting meals that are both healthy and appealing. Making sure every dental product you use is both effective and safe.

While Dr. Goodall and our team can’t recommend the perfect bedtime story, or tell you why your child just won’t go for that delicious steamed broccoli, we are more than happy to discuss the very best ways to promote healthy, strong teeth. Should fluoride toothpaste be part of your child’s dental routine? For many good reasons, the answer is yes.

Why Fluoride is Important

Our enamel is the strongest substance in our bodies, with the highest concentration of minerals, but it is not indestructible. The bacteria that live in our mouths create acids which attack our enamel. Weakened enamel leads to cavities. Fluoride is a mineral that makes the enamel surface more resistant to these acids, and can actually help our enamel repair itself in a process called “remineralization.” Fluoride helps prevent cavities and makes teeth stronger, and those are benefits that will last your child a lifetime.

Can There Be Too Much of a Good Thing?

Fluorosis is a condition that can sometimes develop when a child has been exposed to too much fluoride while the adult teeth are developing below the gum line. (Around the age of eight, children’s teeth have finished forming and are not at risk.) Fluorosis is not a disease, and doesn’t harm teeth, but can lead to faint streaks in the enamel. While this streaking is usually white and subtle, it can sometimes be darker and more noticeable. Teeth discolored by fluorosis can be treated cosmetically, but prevention is always the best option.

Finding the Perfect Balance

Talk to us about using fluoride toothpaste when your baby’s first teeth start arriving. If a very young child is at risk for tooth decay, we might recommend early use of fluoride toothpaste. And for these small children, younger than the age of three, a small smear of paste (about the size of a grain of rice) is sufficient if needed. Swallowing fluoride products increases the risk of fluorosis, so make sure to use a very small amount of paste.

Because young children can’t understand the concept of rinsing and spitting, you always want to make sure the amount of toothpaste you use is age-appropriate even as they get older.  From ages three to six, a pea-sized dab of toothpaste is enough. Children should not use fluoride rinses or supplements unless recommended, and should be monitored to make sure they spit out fluoride toothpaste or rinses after brushing.

Most drinking water already has natural levels of fluoride, which normally aren’t a problem. If you are concerned about high fluoride levels in your local water, talk to us. If your water has higher levels of fluoride than normal, you can minimize consumption when your baby is young by breastfeeding, using non-fluoridated water for mixing with formula powder or concentrate, or buying prepared formula. If your child is a toddler, don’t add fluoride rinses or supplements unless they are recommended by a dental or medical professional.

Talk to us during your visit to our Frisco office about protecting your child’s teeth. We are happy to help you find just the right amount of fluoride to keep young smiles stronger and more resistant to tooth decay. Healthy teeth in a beautiful smile—that’s a perfect balance!

Teens and Gum Disease

February 11th, 2026

You have a lot going on. School. Sports. Activities. Family. Friends. Teens lead busy lives and have busy schedules, so you need to budget your time and energy. One thing you don’t want to spend any of your time and energy on? Dealing with gum disease.

Gum disease most often begins as a reaction to plaque and tartar. The bacteria in plaque produce acids which irritate gum tissue, causing inflammation, swelling, and bleeding. This is gingivitis, the early stage of gum disease.

Left untreated, early gum disease can become periodontitis. Periodontitis is a serious gum infection which can cause receding gums, loose teeth, and even tooth and bone loss.

We usually think about gum disease as something that only older adults worry about. But the unfortunate fact is that children and teens are also at risk for gum disease—and the teen years bring special risks. Why?

  • Braces

The teen years are the most common years for orthodontic treatment. Wearing traditional or lingual braces can make removing plaque from around brackets and wires, between the teeth, and near the gum line more challenging, and gum disease can be the result. When you’ve been working so hard to create a healthy attractive smile, you don’t want to delay your orthodontic progress to treat gum disease.

  • Less-than-Nutritious Snacking

When you have after school commitments like sports practices, play rehearsals, or work, you probably carry a snack to give you the energy you need until dinner. Popular snacks like energy drinks, chips, or candy bars are common go-to choices, but they contain acids, simple carbs, and sugars which are bad for both gums and tooth enamel.

  • Hormones

Increased hormone levels during puberty can make the gums more sensitive and more easily irritated.

  • Your Busy Life

Maybe you’re not getting enough sleep. Or eating as well as you could. Or you’re feeling anxious. Lack of sleep, poor nutrition, and stress can affect your body’s immune system and your ability to fight off infection. And if you’re also not brushing and flossing regularly, your gum health can really suffer.

How do you know if you have gum disease? Good question! Sometimes the early stages of gum disease aren’t obvious. Perhaps you’ve noticed changes in your gums, such as:

  • Redness
  • Swelling
  • Soreness
  • Bleeding
  • Bad breath even after brushing

Any of these changes can be symptoms of gum disease and are a good reason to give our Frisco office a call, since time is important when treating gum disease.

Caught early, gingivitis is usually very treatable—in fact, you can often reverse early gingivitis by paying more attention to your daily dental hygiene. If gingivitis is more advanced, or if periodontitis develops, you need professional dental care to prevent serious damage to your gums, teeth, and bone.

Preventing gum disease from ever developing is always best, though, so let’s look at what you can do to keep gum disease from becoming a problem.

  • Keep Up with Healthy Dental Habits

Even though you’re leading a busy life, take time for your dental care. Brushing twice a day for at least two minutes per session and flossing once a day take just a bit of your time and are the best way to keep your gums healthy. If you wear braces or have a tendency toward cavities and gum disease, Dr. Goodall might recommend brushing or flossing more often.

  • Use the Right Tools

Using the right tools makes a big difference. You should always choose a toothbrush with soft bristles to protect your delicate gum tissue—especially if it’s extra sensitive. Too-harsh brushing can damage even your super-hard tooth enamel, so you can imagine what it can do to your gums! Change out your brush every three to four months when it starts to get frayed and worn.

If you wear braces, ask Dr. Goodall to recommend the best kind of floss to clean between your teeth and around your brackets and wires. The right tools will make flossing a lot easier, and will help you keep your gums healthy and your orthodontic treatment on track.

  • No Matter How Busy You Are, Treat Yourself Well

Watch your diet. Drinking water to hydrate is a healthy (and inexpensive) alternative to sugary and acidic drinks. When you know you have after-school commitments, pack yourself a healthy snack. After snacking, it’s a good idea to rinse with water when you can’t brush to remove any food particles sticking around your teeth and gums.

And even though your schedule is demanding, caring for your mind and body should be a priority. If you have difficulties with sleep or stress, or questions about a nutritious diet, talk to your doctor for some valuable tips to make your daily life healthier and more enjoyable.

With so much going on in your active life, gum problems are problems you really don’t need. Make room in your schedule now for careful daily brushing and flossing, a healthy lifestyle, and regular visits to More Than Smiles, and you’ll be living that active life with a beautiful, healthy smile!

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