Evaluation of the efficacy of diode laser in bleaching of the tooth at different time intervals using spectrophotometer: An study.

Aim: This study aimed at comparative evaluation of the efficacy of tooth bleaching using different concentrations of carbamide peroxide (CP) with and without diode laser at 980 nm for 2.5 and 5 min time duration.

Materials And Methods: Hundred intact human incisors were selected.