When it comes to chewing gum, it's the type of gum you chew that makes a difference in whether it's helpful or harmful to your teeth. While chewing gum containing sugar may actually increase your chances of developing a cavity, there is clinical evidence that demonstrates just the opposite for sugar-free gum. And there's even better news when it comes to chewing sugar-free gum that is sweetened with xylitol. Sugar-free gum helps to clean teeth Studies have shown that chewing sugar-free gum after meals and snacks can help rinse off and neutralize the acids released by the bacteria in plaque, which are harmful to tooth enamel. Both the act of chewing and the flavor of the artificial sweeteners in the gum stimulate ten times the normal rate …