Bonding involves adhering composite resin material that resembles 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, to close gaps between the teeth, or for cosmetic purposes. First the surface of the tooth is roughened so it will easily accept the bonding and hold it. A gel is then applied to micro etch the tooth surface and 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.