how does chewing gum affect your mouth
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 of saliva flow. Not only does the increased saliva flow neutralize the acids in your mouth, it also washes away food particles, helping to keep your teeth clean.
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.