Can chewing gum prevent cavities? Yes! It can if the gum is sweetened with xylitol.

What is xylitol?
Xylitol is a type of “sugar alcohol,” similar to sorbitol and mannitol, sugar replacements that are used in many low calorie foods. Xylitol occurs naturally in many fruits and vegetables and is obtained from the bark of birch trees, coconut shells and cottonseed hulls. It looks and tastes like sugar and is a diabetic-safe, low-calorie carbohydrate.

How does xylitol stop cavity formation?
Decay starts when certain bacteria break down sucrose (regular table sugar) and produce acids that dissolve the minerals in the enamel, the outer protective layer of your teeth. When the decay-causing bacteria try to consume xylitol, they are unable to break it down, and instead they begin to starve.

A normal mouth contains a large population of bacteria, and it is better for your teeth to have more “good” bacteria of the kind that do not cause cavities. Xylitol also stops your saliva from becoming acidic, so your mouth becomes a better environment for the “good” bacteria.

Chewing xylitol gum also increases your flow of saliva. Saliva contains calcium and fluoride and helps give these minerals back to your teeth (re-mineralization), undoing some of the effects of the cavity-causing bacteria. This makes chewing xylitol gum a particularly good solution for people who suffer from dry mouth.

How much xylitol do you need to prevent cavities?
We recommend that you chew or suck on two pieces of xylitol gum or two pieces of xylitol candy for five minutes following meals or snacks, four times daily — if you are at moderate to extreme risk for cavities. The target dose of xylitol is 6 to 10 grams (one or two teaspoons) spread throughout the day. Prolonged gum chewing is not advised, so most xylitol-sweetened products contain flavor that only lasts a short time to discourage excessive chewing. The only side effect of too much xylitol ingestion is that it may have a mild laxative effect.

I don't like chewing gum. Is there another way to get xylitol?
People who don't like to chew gum have the option of using xylitol in mints, candies, mouthwash, toothpaste, or mouth sprays. For these individuals, a minimum dose is 5 to 6 grams (one teaspoon) three times per day.

So now you can add xylitol to the list of ways to fight cavities: daily brushing and flossing, and regular professional cleanings — and chewing xylitol gum.

Contact us today to schedule an appointment to discuss your questions about xylitol and other methods of preventing tooth decay. You can also learn more by reading the Dear Doctor magazine article “Xylitol in Chewing Gum.”

Your teeth were designed to last you a lifetime, so you should do everything you can to protect them. This includes guarding them against dental erosion. However, many people may not know for sure what dental erosion is, much less how or why they need to guard against it.

Dental or tooth erosion is the irreversible loss of tooth enamel from chemical attack by acids. Eating or sucking acidic foods such as lemons is a good example. But most people are shocked to discover that it can also be caused by their favorite sodas (carbonated beverages), natural fruit juices, energy and sports drinks — especially with excessive consumption. It takes the saliva, nature's protection, at least 30 to 60 minutes to neutralize the effects of acid, so only one acidic drink an hour causes your teeth to be continually bathed in acid. And this is an important fact to know, because if your mouth is acidic all the time, this will promote tooth decay.

Will brushing help out with prevention?

When it comes to dental erosion, brushing immediately after acid consumption can actually make it worse by accelerating the erosion process. This is because the acids in these drinks (and some foods) actually dissolves tooth enamel and softens the tooth surface. These newly softened surfaces can literally be brushed away if you brush before your saliva has a chance to try to reverse the process. If done often, you could even brush away your enamel! For this reason, you should wait at least 30 to 60 minutes before you brush your teeth after consuming any of these products.

So what can you do to prevent dental erosion?

One important step that you (and your family) can do to help prevent dental erosion is to limit the amount of these beverages you drink. Instead, try drinking calcium-rich milk or water and saving your favorite acidic beverage for a special treat that you consume preferably with a meal. Try reducing the number of these drinks you consume over a period of time. If you must drink an acidic beverage avoid swishing it in the mouth and use a straw to reduce the contact between the acid and your teeth.

Just remember that once your dental enamel has eroded, it is gone forever. So you should follow these simple tips now to protect your smile and future.

Tooth decay is not trivial. It's a worldwide epidemic, one of the most common of all diseases — second only to the common cold. It affects more than one fourth of U.S. children of ages 2 to 5 and half of those 12 to 15. Among adults, tooth decay affects more than ninety percent of those over age 40.

Prevention of cavities starts with a healthy diet and effective brushing and flossing, but it is much more complex than that. Three strategies for reducing dental caries (tooth decay) include:

Protect with Fluoride and Sealants
This works best when fluoride is applied to the crystalline coating of your child's teeth just after they push through the gums (erupt). The fluoride becomes incorporated into the tooth's surface and acts as a barrier to decay. Studies have shown that low doses of fluoride are safe and effective.

Dental sealants are used as a companion to fluoride because they seal tiny pits and fissures in the tooth's structure, creating an even stronger barrier.

Modify Oral Bacteria
Every mouth contains bacteria, no matter how well you clean your teeth. Not all bacteria cause tooth decay. The problem bacteria are those that produce acid as a byproduct of their life processes. We can identify acid-producing bacteria in your mouth, you can reduce their concentrations using antibacterial mouthrinses such as chlorhexidine, and pH neutralizing agents (substances that reduce the amount of acid).

Reduce Sugars in Your Diet
Bacteria in your mouth ferment sugars and other carbohydrates, producing acids that eat into the mineralized outside structure of your teeth, the enamel. So eating fewer sugars — particularly added sugars such as those in juices, sodas, candy and other sweets — will help prevent decay. Your total sugar intake should be less than fifty grams, or about ten teaspoons, per day. If you begin to read labels showing sugar content of common foods, you may be surprised at the amount you consume without knowing it.

If you must snack between meals, non-sugary snacks like raw vegetables and fresh fruits create a better environment for your teeth.

Xylitol, an “alcohol sugar” used in some chewing gums and dental products, has been shown to reduce decay-producing bacteria.

Try these easy strategies to keep your teeth healthy and functional throughout your lifetime.

Contact us today to schedule an appointment to discuss your questions about tooth decay. You can learn more by reading the Dear Doctor magazine article “Tooth Decay.”