Dental enamel is the strongest substance in the human body, but just like anything else, even the strongest substance can be in need of repair. A tooth can chip or crack when you least expect it, even from chewing on a pen, ice cube, or piece of hard candy. It’s even more likely to happen if you are prone to tooth decay or suffer from abnormal amounts of acid or bruxism. Dental bonding is a simple cosmetic procedure using soft tooth-colored composite resin to repair a chipped, cracked, or broken tooth. It can also close gaps between teeth, or lengthen a small tooth.