Chewing gum can either promote cavities or protect against them, depending on the variety used. Several clinical studies have found that chewing sugarless gum after snacks and meals can protect against tooth decay. To reap the full cavity-fighting benefits of gum, though, there are a few things you should know.
So, how exactly does chewing gum—a favorite among children—prevent tooth decay? Chewing gum triggers the saliva glands in the mouth, which subsequently rinses out bacteria-ridden food and debris while neutralizing germs. Those small pieces of food left in the back of your mouth from your most recent meal may seem harmless enough, but they can harbor millions of decay-causing germs. Chomping down a piece of sugarless chewing gum will promote more saliva in your mouth to wash away this food debris.
Certain varieties of sugarless chewing gum also contain chemicals which neutralize cavity-causing bacteria in the mouth, adding another barrier of defense against tooth decay. Aspartame, xylitol, sorbitol, and mannitol are some of the most common ingredients used in sugarless gum. (more…)