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Just What Is a Cavity, Anyway?

November 19th, 2025

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 which 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 which 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, that 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 which 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 which 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 which 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 Middleton, WI dental 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.

  • 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. Joel Hartjes and Dr. Jon Szewczyk 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!

Snacks for Healthy Teeth while Watching the Big Game

November 12th, 2025

It's almost game day and you're wondering what to put on the menu for your guests. Most snacks are typically highly processed and unhealthy. Why not mix it up this year and opt for some snacks that promote good oral health? Here are some of Dr. Joel Hartjes and Dr. Jon Szewczyk favorites!

  • Apples, carrots, celery, and cucumbers: These foods and other crispy, fibrous, fruits and vegetables are an excellent choice for the big game. Not only are they rich in vitamins and minerals which your body and mouth need, they are also known as detergent foods because of the cleaning effect they have on the teeth and gums. Try apples wedges spread with peanut butter and sprinkled with cinnamon.
  • Beans: Beans are filling because they are packed with fiber and that keeps you from opting for sugary or fatty snacks. Along with fruits and vegetables, beans should be one of the stars of your game-day snack lineup. How about some hearty chickpea hummus with cucumber chips?
  • Nuts like almonds, walnuts, pistachios, and cashews: Nuts abound in the minerals that help keep your teeth and gums strong like calcium, magnesium, and potassium. Put out a bowl of raw or roasted nuts for your guests as a crunchy, satisfying alternative to chips or crackers. Recent research even shows that the polyunsaturated fatty acids in nuts may help prevent gum disease. But remember not to eat the whole bowl! Nuts are very high in calories and a little goes a long way. Enjoy and handful or two along with your other healthy snacks.
  • Dark chocolate: This one may be hard to believe at first, but research shows chocolate can be great for your teeth and help prevent decay! Now don't run off and start stocking your pantry with a bunch of that super sweet stuff, because these benefits come mainly from the tannins, polyphenols, and flavonoids present in the cacao bean. Dark chocolate is the least processed variety of chocolate and the closest to the cacao bean, so make sure you purchase a variety that is listed as 70% cocoa or more for these benefits. Like with nuts, chocolate is easy to overdo — aim to eat two or three squares.

Seal of Approval

November 12th, 2025

Outside activities? You slather your kids with sunscreen. Biking? You don’t let your child leave the house without a helmet. Youth sports? You provide mouthguards and padding and headgear and all the other tools designed to keep your child safe. Protecting your child is a fundamental part of parenthood, and you take your job seriously.

Protecting your child’s dental health is fundamental, too! Tooth decay is the most common chronic disease in children, and children’s premolars and molars are far more vulnerable to decay than any of their other teeth. You can help protect your child’s molars and premolars with a simple and effective treatment—dental sealants.

  • How Do Sealants Work?

The bacteria in plaque use food particles to create acids. These acids erode the minerals in tooth enamel, creating weak spots that become cavities over time. Molars and premolars are especially vulnerable to cavities because of their uneven chewing surfaces. The dips and grooves on top of the teeth—technically known as “pits and fissures”—collect food particles and bacteria, and can be difficult for children to clean completely when brushing. That’s why cavities are so common in newly erupted molars.

Dental sealants protect your child’s molars and premolars by creating a barrier that covers and smooths out the chewing surface of the tooth, preventing bacteria and food particles from getting stuck inside those uneven pits and fissures.

  • What Kind of Sealants Are Available?

The two most common dental sealants are composite resin coatings and glass ionomer sealants.

With resin sealants, after each tooth is cleaned and dried, an etching solution will be brushed onto the top surface of the molar. This etching slightly roughens the surface so that the sealant will stick to the tooth more effectively. A thin coat of the sealant is then painted on and hardened under a special curing light.

Glass ionomer sealants use a flexible paste that bonds to the tooth and hardens within minutes. While they generally don’t last as long as resin sealants, they are designed to absorb and release fluoride for extra cavity-fighting protection.

  • Do Sealants Work?

They certainly do! According to the Centers for Disease Control, sealants can prevent 80% of the cavities in molars and premolars, which is where 90% of children’s cavities appear. Dental sealants can last from three to five years, or even longer. Dr. Joel Hartjes and Dr. Jon Szewczyk will check the condition of any sealants at each dental exam, and let you know if it’s time for a reapplication.

  • When’s the Best Time to Get Sealants?

Tooth enamel gets harder as we get older, so children’s newly erupted teeth are more at risk for cavities. First adult molars usually arrive when a child is six to seven years old, and second adult molars come in around the age of 12. The first and second premolars can erupt between the ages of ten to 12. As soon as the first permanent molars begin to erupt, it’s a good time to talk to Dr. Joel Hartjes and Dr. Jon Szewczyk about the best time to apply sealants.

And what about baby teeth? Even though baby teeth are meant to be replaced, they shouldn’t be lost to tooth decay before they are ready to fall out. Primary teeth help young children learn to speak and eat properly and hold the place for adult teeth so these permanent teeth come in where they should. Baby teeth have thinner enamel, and so cavities can progress more quickly. Dr. Joel Hartjes and Dr. Jon Szewczyk can let you know if sealant protection for your child’s baby molars is indicated.

Applying sealants at our Middleton, WI office is a safe, simple, cost-effective, and painless process. Dental sealants are one more tool you can use to make protecting your child’s dental health a little easier and a lot more effective. That gets a well-deserved parents’ seal of approval!

Straight Talk about Your Smile

November 5th, 2025

Braces and aligners help straighten teeth and create a confident, attractive smile. And those visible benefits are amazing! But orthodontic treatment has an even more important purpose than transforming the appearance of your smile—and that’s protecting and improving your oral health.

If you’re ready for orthodontic treatment, you know you can look forward to a future of beaming smiles. You can also look forward to healthier teeth and gums and a more comfortable and functional bite. For some people, orthodontic treatment can make speaking and eating easier, and could even contribute to a better night’s sleep.

How can orthodontic treatment accomplish these goals? Let’s set the record straight!

Protecting Tooth and Gum Health

  • Lowering Your Risk of Cavities

Perfectly aligned teeth are considered aesthetically pleasing, but there’s a more practical reason to appreciate straight teeth. Crooked and overlapping teeth make it easier for food particles and plaque to stick in between the teeth and harder for your brush to remove them. Straight teeth allow you to remove cavity-causing plaque more effectively and with less effort.

  • Promoting Healthy Gums

When plaque and tartar build up around the gums, the gum tissue becomes irritated, which is the first stage of gum disease. When teeth are straight and evenly spaced, brushing and flossing are easier and more effective, and your gums reap the benefits.

Creating a More Functional and Comfortable Bite

A malocclusion occurs when the teeth and jaws aren’t properly aligned—they don’t fit together the way they should when you close your mouth. There are different types of bite problems, and these can impact both your oral health and your overall health depending on the type and the severity of the malocclusion. Once a malocclusion is corrected, patients can experience:

  • Stronger Teeth and Healthier Gums

Teeth and jaws which don’t fit together properly put extra pressure on your teeth and gums, leading to problems such as worn enamel, cracked teeth, and gum recession. Protect your oral health by creating a well-aligned bite.

  • A Pain-Free Bite

Left untreated, malocclusions can cause problems like temporomandibular joint disorder (TMD), headaches, face and neck pain, earaches, limited jaw movement, and painful chewing. Correcting your bite will protect your temporomandibular joint from harm and will relieve the discomfort and pain caused by a malocclusion.

Other Possible Benefits of Treatment

For those with more serious malocclusions, orthodontic treatment might improve daily life in unexpected ways:

  • Improved Speech

It takes a lot of coordination to produce different sounds. The lips, the tongue, the alveolar ridge which holds our teeth, the hard and soft palates, parts of the throat, and, yes, the teeth all play a part in creating speech. Some kinds of malocclusions contribute to speech disorders such as lisps, which orthodontic treatment can help correct.

  • Improved Digestion

Digestion starts in the mouth, not the stomach! As we chew, we break down our food into particles which are easier for the stomach to digest. If you can’t chew properly because your teeth are misaligned or a bad bite makes it too painful to chew food as thoroughly as you should, you won’t be getting the full nutritional benefits of your healthy diet. Orthodontic treatment helps you bite down painlessly and break down foods easily for better digestion.

  • Improved Sleep

Bite problems can sometimes lead to sleepless nights. More serious malocclusions may cause mouth breathing, which, in turn, can affect the quality of your sleep. If you’re having trouble sleeping, a sleep specialist can help you discover the source of your problems. If your troubled sleep is caused by tooth or jaw misalignment, orthodontic treatment might be the solution.

Talk to your dentist to learn about the many options available to align your teeth and jaws for a healthy, attractive smile. Braces or aligners might be all you need to correct a mild malocclusion. Appliances and headgear can influence the growth and position of the jaw if needed. In more severe cases, surgery, together with braces, can create a proportional, healthy bite.

Whether it’s a confident smile, healthier teeth and gums, a functional, comfortable bite, or any of the other benefits orthodontic treatment can bring, talk to the dental team at Hartstone Dental in Middleton, WI to discover how orthodontic treatment can help you achieve all of your smile goals!

1001 N Gammon Rd #2
Middleton, WI 53562
(608) 836-5600