Too much of everything has its disadvantage, but here are the benefits of chewing gum. When we chew gum the mouth produces saliva that cleanses the acid from food, and the saliva produced during chewing of gum contains mineral that helps strengthen our teeth. For dental protection sugarless gum is recommended. The best habit is to chew gum after meal and the type of gum is also important for oral health, but excess chewing of gum could be harmful so moderation is advised