Bonding involves adhering composite resin material that is matched to the color of the tooth to the front of the tooth. This is done to repair damage done to the tooth by decay, to alter the alignment of the tooth, close gaps between the teeth, or for cosmetic purposes.
First, the surface of the tooth is roughened in order to accept the bonding and hold it. A gel is applied to micro etch the tooth surface, and then a primer/bond agent is applied so the material adheres to the surface. Then, the material itself is placed on the tooth and hardened with intense light. The composite resin material is shaped and polished to get a lustrous finish as a last step. Porcelain can successfully be bonded to teeth. This allows the dentist to be more conservative with removing tooth structure.