Photo CreditAs well better breath, gum, specifically sugar-free gum, should be chewed over sugar-laden counterparts to maintain a healthy mouth. The action of gum-chewing can remove plaque from the teeth as well as creating saliva in the mouth which can act as a protective barrier for the teeth. It is essential that gum is sugar-free because gum that has sugar content can be damaging to the teeth. Sugar-free gum is not an alternative to brushing by any means but if brushing is not practical then grab a pack of gum and chew after meals. Be careful though, too much chewing can lead to aggravation and discomfort in the jaw as well as various joints and muscles in the body, not to mention consuming too much gum can even cause diarrhea.