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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. 

If you wear braces, you want to be especially careful about excess demineralization. Because it can be hard to brush and floss effectively with braces, white spots and discolored patches are a common concern for those with braces, especially on the enamel around brackets.  

Talk to Dr. Nathan Downey at our Bowling Green, OH office about which toothpastes can help restore a healthy balance between the ongoing cycles of demineralization and remineralization when you have braces. While tooth-repair toothpaste can’t fix cavities, these products can often strengthen demineralized enamel and reverse this earliest stage of tooth decay.

Braces-Friendly Recipe: Lunch

March 4th, 2026

Getting braces comes with a lot of rules. No sticky candies, watch out for popcorn, and steer clear of chips. These rules leave many braces-wearers wondering what they can still eat without hurting their teeth or their expensive orthodontic appliances. Fortunately, constructing a braces-friendly lunch is straightforward once you know which foods to avoid.

Foods to Avoid When Wearing Braces

There are a few food categories to avoid when you have braces. Sticky foods also stick to the metal in your braces, and can potentially break wires or individual braces. For example: bubblegum, candy bars, caramel, licorice, fruit roll-ups, and Starbursts should be avoided. Many of these foods also contain high levels of sugar, which can cause plaque build-up if not brushed away properly.

Also, be wary of hard foods that can harm your orthodontic appliances. Avoid eating hard taco shells, chips, Rice Crispy treats, hard candy, beef jerky, and popcorn. Some healthy foods, such as carrots, apples, corn on the cob, and nuts, are hard on braces. To eat these foods safely, cut them into smaller pieces before eating.

Remember that certain habits may be harmful to your braces. For example, crunching on ice cubes may be a reflexive response when you’re enjoying a cold beverage, but this can significantly harm your braces and extend treatment time. To stay on the safe side, Dr. Nathan Downey and our team at Downey Orthodontics recommend you drink beverages without ice or add crushed ice whenever possible.

Lunch Recipe

Even with braces, it’s easy to enjoy a healthy, nutritious lunch. For example, make a panini on whole wheat bread with slices of turkey deli meat, a piece of Swiss cheese, and tomato slices. Spread 1 tbsp. of mustard or mayonnaise on the bread before toasting the sandwich in a panini grill. Serve the panini with ½ c. low-fat cottage cheese and a sliced pear or apple for a balanced meal. Then grab a pudding cup or some JELLO for dessert. Wash it all down with water containing a lemon wedge or all-natural fruit juice. Make sure to brush your teeth or rinse with mouthwash after lunch to wash away sugars and food residue that can get trapped in braces and cause decay.

If you have any questions about what you can and can’t eat with braces during your treatment at Downey Orthodontics, be sure to ask our team during your next appointment at our Bowling Green, OH office!

Caring for Your Smile after Invisalign® Treatment

February 25th, 2026

You have done a lot of work to get the perfect smile. You wore your Invisalign aligner trays and cared for your teeth, and now your treatment is done. You still need to take care of your teeth to keep your beautiful smile. Keeps these things in mind when you think about your oral care routine.

Retainers

Many patients do require a retainer after Invisalign treatment. This will be based on your unique situation. If a retainer is recommended by Dr. Nathan Downey, use it as directed. Retainers prevent your teeth from shifting back into their original position. You should also avoid hard, crunchy foods for the first couple of weeks as your teeth adjust. For younger patients, retainers are normally used until the wisdom teeth come in or are extracted.

Brushing and Flossing

Brushing and flossing must be part of your daily oral care. Flossing helps remove the plaque, which becomes tartar or calculus. This build up can lead to gingivitis and gum disease. Your gums may be more sensitive for a week or two after your orthodontic work is completed. A warm salt water rinse may relieve discomfort.

Your teeth may be slightly sensitive for a short time. They have been protected by your Invisalign aligner trays and now are fully exposed. You might want to try a sensitive toothpaste to get through the transition. Just ask; we will be glad to recommend the best type for your needs. If your teeth are stained, a professional whitening treatment can be considered.

Regular Dental Checkups

You still need to have regular dental exams. Professional cleanings and X-rays make sure that both your teeth and gums stay healthy so you can keep your teeth for life. If cavities or other problems are found, they can be taken care of quickly.

If you have any questions about how to care for your teeth after your Invisalign program, please ask our Bowling Green, OH team. We want you to keep your healthy smile and enjoy the results of your Invisalign treatment.

Tips to Avoid Common Problems Associated with Braces

February 18th, 2026

While braces play an important part in helping to create a healthy mouth and teeth, you might experience a few side effects while wearing them that are common and can be easily treated.

Even with the best of care, braces can cause soreness to your mouth. As your teeth begin to move, it is natural for your teeth to feel aches and your jaw to develop soreness.

If there are broken wires or loose bands on your braces, a sore tongue, mouth, or canker sore will occur. Canker sores are a common occurrence when braces rub inside the mouth. There are ointments available to reduce the pain and irritation associated with mouth sores. We urge those who experience a sore mouth or any of the following problems to call our office to schedule an appointment.

  • Loose brackets: Apply a small amount of orthodontic wax to the bracket temporarily. You might also apply a little between the braces and the soft tissue of your mouth.
  • Loose bands: These must be secured in place by your orthodontist. Try to save the band for repair.
  • Protruding or broken wires: The eraser end of a pencil can be used to move the wire carefully to a less painful spot. If you are unable to move it, apply orthodontic wax to the tip. If a mouth sore develops, rinse with warm salt water or antiseptic rinse.
  • Loose spacers: These will need to be repositioned and sometimes replaced.

Foods to Avoid

Some foods can also help or hurt you while you’re wearing braces. Remember to cut your food into small pieces that can be easily chewed. You will want to avoid hard and chewy foods that can break your hardware. Foods such as corn on the cob, nuts, carrots, apples, ice, and bubble gum should be avoided.

Braces, rubber bands, springs, and other mouth appliances associated with braces will normally attract food particles and plaque. Without the proper care, this could cause staining of your teeth.

Our staff at Downey Orthodontics recommends brushing after every meal or snack and carefully removing any food that might be lodged in the braces. A fluoride mouthwash might be helpful as well as flossing. At your next appointment, Dr. Nathan Downey can advise you how to floss with a brush specially designed for braces!

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