Adhesion of two bonding systems to air-abraded or bur-abraded human enamel surfaces.

Objectives: The purpose of this in vitro study was to evaluate whether mechanical alteration of the enamel surfaces with air abrasion and bur abrasion techniques could enhance the bonding performance of a three step and a self etching adhesive resin systems to enamel.

Methods: 126 extracted lower human incisor teeth were used. The teeth were divided into three groups including 40 teeth each.