After slight preparation, the tooth is etched with a weak phosphoric acid solution to create a more porous and rougher surface for increased bonding strength. Next, a bonding agent is applied to the tooth and cured with a special LED light. Then, a composite (plastic) resin is placed on the tooth and contoured into the appropriate shape and hardened with the curing light. It is then further shaped and highly polished, to create a natural appearance. The procedure usually requires only one visit and often does not require anesthesia.