Diode laser effect on enamel microhardness after dental bleaching associated with fluoride.

Objective: The aim of this in vitro study was to evaluate the effects of diode laser irradiation on human dental enamel treated by bleaching and acidulated phosphate fluoride gels (APF) according to microhardness analysis.

Background Data: The high interest of patients for aesthetics in cosmetic dentistry has led to new bleaching materials and the development of new techniques.

Materials And Methods: Sixty embedded, flattened human third molar enamel fragments were randomly assigned to three groups (n=20).