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Can Toothpaste Repair Tooth Decay?

March 11th, 2026

It seems like the ads are everywhere these days—repair your enamel and reverse tooth decay with a tube of toothpaste! Are these claims too good to be true? Let’s dive into the science of tooth decay—how decay develops and how (and if!) it can be reversed.

Teeth can stand up to the powerful pressures of biting and chewing because over 95% of our enamel is made up of minerals. Calcium and phosphate ions in our teeth bond to form a crystal structure called hydroxyapatite. Because of the strength of this crystalline design, tooth enamel is the hardest substance in our bodies, even stronger than our bones. 

But bones, like most other parts of our bodies, are living tissue, which means that they can create new cells to replace old or damaged cells. Tooth enamel can’t regenerate new cells to repair itself. This means that when a cavity has made a hole in the tooth, the enamel can’t grow back. And, while enamel structure is very strong, it’s also vulnerable to damage—specifically, damage from acids. 

Our teeth are exposed to acids throughout the day, whether they are acids created by plaque bacteria or the acidic foods and drinks we consume. Acids dissolve mineral bonds, stripping calcium and phosphate minerals from the enamel and leaving weak spots in the tooth surface. This process is called demineralization. Demineralization is the first stage of tooth decay.

The good news? Our bodies are designed with a built-in defense mechanism to prevent demineralization from causing lasting damage. All through the day, saliva helps wash away acids in the mouth and bathes our teeth with new calcium and phosphate ions. These ions bond with the calcium and phosphate in our enamel, restoring enamel strength. This protective repair process is called remineralization.

Now for the bad news. In the tug of war between demineralization and remineralization, saliva can only do so much. If your diet is heavy with acids, if you don’t brush away acid-producing plaque bacteria regularly, if you eat a lot of the sugars and starches which feed plaque bacteria, the remineralizing effects of saliva can’t keep up with the demineralizing effects of acids.

The first visible sign of demineralization is often a white spot on the tooth where minerals have been stripped from enamel. Studies have shown that enamel-strengthening toothpaste can be effective in this very first stage of tooth decay. Toothpastes which advertise enamel repair generally contain one or more of these ingredients:

  • Calcium Phosphate
  • Hydroxyapatite
  • Fluoride 

Toothpastes with calcium phosphate or hydroxyapatite contain calcium and phosphate minerals, the building blocks of tooth enamel. Studies have suggested that these minerals can replace the calcium and phosphate ions stripped from enamel. These toothpastes may or may not contain fluoride, which is something you should discuss with your dentist before deciding on a specific toothpaste.

Fluoride toothpastes remineralize enamel—and more! Fluoride ions are attracted to the tooth’s surface, and, when fluoride ions join with the calcium and phosphate ions there, they form fluorapatite. Fluorapatite crystals are larger, stronger, and more resistant to acids than hydroxyapatite crystals. And, once bonded with tooth enamel, fluoride attracts the calcium and phosphate ions in saliva to remineralize the teeth more quickly. 

Why consider enamel-repair toothpaste? 

Once enamel is gone, it’s gone for good. If excess demineralization isn’t treated, a weak spot on the tooth surface will continue to erode, growing bigger and deeper until it becomes a hole in the enamel. This is a cavity, and your dentist will need to treat and repair your tooth to prevent the cavity from growing and potentially exposing the tooth’s pulp to bacteria and infection. 

Talk to Dr. Joel Hartjes and Dr. Jon Szewczyk at our Middleton, WI office about which toothpastes can help restore a healthy balance between the ongoing cycles of demineralization and remineralization. While tooth-repair toothpaste can’t fix cavities, these products can often strengthen demineralized enamel and reverse this earliest stage of tooth decay.

Healthy Digestion Begins with Healthy Teeth

March 4th, 2026

You pay attention to what you eat. After all, your oral health depends on it. Without the necessary proteins, vitamins, and minerals in your diet, your teeth and gums will suffer. But did you know it’s a two-way street? Without healthy teeth and gums, your digestive system can suffer as well.

Because digestion doesn’t start in your stomach—it starts in your mouth! Let’s take a quick look at how the digestive system operates.

  • Teeth

The first step in digesting is breaking down foods so your body can extract their nutrients more easily. Healthy teeth are essential here. Incisors and canines tear food into smaller pieces while molars grind these pieces into an easy-to-swallow, paste-like consistency. While we chew, the surface area of the food increases, allowing the digestive enzymes in saliva, the stomach, and the small intestine to work more efficiently.

  • Salivary Glands

Saliva production increases when we eat. Digestive enzymes in saliva begin breaking down carbs into sugars, and separating fat molecules. Saliva also contains antimicrobial peptides which are important for oral and gut health.  

  • Esophagus

This muscular tube connects the back of the throat to the stomach. As we swallow, muscles in the esophagus contract and relax, an involuntary movement called peristalsis. These contractions push food down into the stomach. Peristalsis also occurs in the stomach and intestines, efficiently moving food through the rest of the digestive system. 

  • Stomach

Inside the stomach are gastric acids and enzymes which break food down further to help the small intestine make use of these nutrients in the next stage of digestion.

  • Small Intestine

This organ works to reap the benefits of our healthy diets. The small intestine absorbs about 95% of the nutrients from our digested food—carbohydrates, proteins, fat, vitamins, and minerals—and transfers these nutrients to the circulatory system to be used throughout the body. Any remaining food particles travel to the colon, or large intestine.

  • Large Intestine

Bacteria in the large intestine help process soluble fiber, which we can’t digest on our own. The large intestine is also where insoluble fiber and anything else undigested are converted to solid waste. 

Digestion begins in the mouth, and, when dental problems make chewing and swallowing difficult, the entire digestive system can be affected:

  • Uneven bite pressure

When you can’t apply chewing pressure because of decay, painful infections, or loose teeth, or when you are missing a tooth or teeth, it’s hard to chew food into the paste-like consistency necessary for rest of your system to process it smoothly.

  • Reduction in digestive enzymes and peptides

Saliva contains enzymes which make food easier to digest and antimicrobial peptides which are important for gut health. Xerostomia, or dry mouth, causes less saliva production. Inadequate chewing does as well. Without sufficient saliva, your system won’t benefit from the digestive prep work and gut protection which saliva typically provides. 

  • Uncomfortable swallowing

Insufficiently chewed food makes peristalsis in the throat and other digestive organs more difficult. Larger pieces of food can become stuck in the esophagus, causing painful swallowing or even choking. Dry mouth can also make swallowing very uncomfortable.

  • Higher risk of stomach problems

When food isn’t chewed thoroughly, the stomach has to work harder, and the risk of gastroesophageal reflux increases. Highly acidic gastric juices can back up into the esophagus and mouth, causing heartburn, chest pain, sore throat, and vomiting. 

  • Bowel irritation

When food particles are too large, the small intestine must work harder to break them down and to absorb their nutrients. Insufficiently digested food can upset the bacterial balance in the large intestine. These problems can cause indigestion, constipation, gas, and bloating.

  • Changes in nutrition 

Dental problems can also lead to nutritional imbalances even before we start to digest. Soft foods and liquids are often chosen over proteins, fruits, and vegetables when loose or missing teeth or painful teeth make chewing difficult. While a soft diet is fine for a few days if your mouth is a bit sore following dental treatment, it can be difficult to get the all the nutrients your body needs when you only eat soft foods.

Dentists generally recommend a thorough examination twice a year to discover and treat any oral problems before they become more serious, but any tooth pain or sensitivity is a good reason to see Dr. Joel Hartjes and Dr. Jon Szewczyk immediately. 

Whether you have a cavity, an infection, gum disease (one of the major causes of loose or missing teeth), bite problems, dry mouth, or any other dental concerns, the team at Hartstone Dental in Middleton, WI can help you discover solutions which will make eating and digesting your meals pain-free once again. Your healthy smile—and your healthy body—will thank you!

To use or not to use mouthwash; that is the question

February 25th, 2026

A famous mouthwash company chose the marketing slogan, “Better than flossing.” As a consumer, would you believe a high-end commercial that essentially tells you to stop flossing? Just use this brand of mouthwash and the risk of gingivitis, cavities, etc., is gone. What a wonderful idea! Now for the reality: This is simply not true.

The company that made these claims received some negative feedback for making this false claim. Does this mean that all mouthwashes are ineffective? Absolutely not. It takes a little bit of research to know which mouthwashes are most effective and best suited for you. Here are some key points to remember when choosing a mouthwash.

First, think about why you want to use a mouthwash. If you are at high risk for cavities, you would benefit from a fluoride mouthwash. Check the labels to see which ones contain fluoride.

If you have active gingivitis, a mouthwash with some antibacterial properties would be preferable. Read the labels carefully. You do not want a mouthwash containing alcohol. If you have active periodontal disease, an antibacterial mouthwash is appropriate, though you may want to discuss which kind would be best for your individual needs.

Prescription mouthwashes are also an option. You should pay close attention to the directions, such as how much and how long to use them. There is one brand in particular whose effectiveness can steadily diminish if you use it continually. There can also be side effects you should discuss with our office and/or your pharmacist.

Some great mouthwashes for kids change the color of plaque on their teeth to help them see how they are doing with their brushing. This is a great learning tool for the child and the parent! Why not pick up a bottle for yourself next time you’re at the store and evaluate your own performance?

Beware of claims that a mouthwash can loosen plaque. This is not accurate. Beware of any mouthwash that has alcohol. This is worth mentioning twice. Take care of your taste buds. If you are using a strong mouthwash, it can reduce your sense of taste.

These tips should help you choose the right mouthwash for your needs. Please contact Dr. Joel Hartjes and Dr. Jon Szewczyk at our Middleton, WI office with any specific questions!

Bells and Whistles for Your Bristles?

February 18th, 2026

Modern dentistry has made the most of today’s technological innovations. And we’ve come a long way from the fraying sticks our ancestors used as toothbrushes.

On the other hand, while it’s a lot better than a fraying stick, the manual toothbrush model you’ve used for years might be ready for an upgrade. Should you take this opportunity to try out some new technology offering all the bells and whistles? Let’s answer that question by asking a few more questions.

Happy with your manual brush?

If you like your manual toothbrush and it’s doing the job, by all means, stick with it. But even your old familiar brush can evolve:

  • There are lots of bristle options, but soft bristles are almost always the way to go. Medium and hard bristles can be too abrasive for your enamel.
  • Heads come in a variety of sizes, so make sure the head size is comfortable. You want to be able to maneuver to reach every tooth surface, which a too-large brush head just can’t do.
  • Try a different handle shape if you’re having trouble maneuvering and keeping a firm grip.
  • Change your brush regularly. Brushes are effective for about three months before the bristles start to fray and breakdown. This is a good opportunity to experiment with different brands and styles.

Does your old brush suit your current needs?

Different types of manual toothbrushes are available for effective and comfortable brushing when you need options that a typical brush doesn’t provide:

  • Special orthodontic toothbrushes are designed with bristles trimmed to fit around brackets and wires and smaller heads to reach into tight places.
  • For those with mobility issues, brushes with larger or easy-grip handles make cleaning more comfortable.
  • Brushes with extra-soft bristles are available if you have enamel erosion or sensitive gums.
  • Because many women find their gums become especially sensitive during pregnancy, there are brushes designed especially for moms-to-be.

Is it time to go electric?

If you haven’t tried an electric toothbrush before, you might find that getting braces is a great reason to give one a spin.

  • Electric toothbrushes can outperform manual models. A dedicated brusher might manage hundreds of brushstrokes for each minute of brushing, while an electric brush can provide thousands. If, despite your regular brushing, you have plaque build-up, an electric brush might be a good alternative to your manual brush.
  • Models are available which can alert you when you’re brushing too hard—which is important for your enamel if you’re a heavy-handed brusher.
  • If you tend to *think* you’ve brushed for the recommended two minutes, but have *actually* brushed 32 seconds, some electric brushes come with timers!
  • There are tapered electric orthodontic brush heads designed just for people with braces.
  • Electric brushes have bigger handles and can be easier to grip.

Is your current brush doing the job?

So, should you stick with the familiar toothbrush that’s worked for you all these years, or take this opportunity to try out some new technology that offers all the bells and whistles? The answer is clear: the right brush for you is the one that works!

If your regular checkups show that plaque is under control, you’re doing just fine with the brush in hand. If you or Dr. Joel Hartjes and Dr. Jon Szewczyk notice plaque buildup, it’s time to consider making some changes. Whether it’s a question of tools, techniques, or time spent brushing, your Middleton, WI dental team has the answers you need for state-of-the-art dental hygiene.

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