A recent study by Wrigley gum company, makers of Orbit, showed that chewing gum for 20 minutes a day can increase your amount of saliva and make the acid in the mouth more neutral.  It has been shown that an acidic mouth has more cavities.  Chewing gum can make you have fewer cavities!

Trident Extra care has recently been recommended for cavity reduction.  It contains Xylitol and Recadaldent which helps mineralize teeth. A study of children showed a 70% reduction in decay if they chewed gum.