Efficacy and persistence of tooth bleaching using a diode laser with three different treatment regimens.

Statement Of Problem: Studies have measured the effectiveness of tooth bleaching, however there are very few studies that have measured the persistence in color change after a 6-month follow-up.

Purpose: This study assessed the efficacy of the laser bleaching process using different regimens, and the persistence of color change over a 6-month period.

Method And Materials: Sixty patients divided into three equal groups were subjected to bleaching using a diode laser with 34% hydrogen peroxide.