If you want to keep your teeth healthy and help prevent tooth decay, chewing sugar-free gum may be a good place to start.

The Mouthhealthy.org website suggests how to choose a sugar-free gum:

Look for a sugarless gum with the American Dental Association Seal.
Choose gum that contains aspartame, sorbitol, mannitol or xylitol, which are sweeteners that don't cause cavities.
Don't let gum replace basic dental hygiene, such as regular brushing and flossing.