Article:

Bleaching is the most conservative esthetic treatment for discolored teeth when compared to resin-bonded composites, porcelain veneers, or crowns. The success of any bleaching treatment is based on the ability of the bleaching agent to permeate tooth structure to the location of discoloration, and remain there long enough to oxidize the molecules containing the stain. So far, little research has been published in the dental literature on laser in-office power tooth bleaching. The available data comes mainly from the manufacturers of the laser devices. The purpose of this study was to compare the efficacy of power bleaching using a laser assisted hydrogen peroxide system, and to determine the stability of the color change over a 6-month period.