An analysis of surface roughness, surface morphology and composite/dentin bond strength of human dentin following the application of the Nd: YAG laser

摘要

Objectives: This study was conducted to investigate the surface effects to dentin following laser "etching" with an Nd: YAG laser, and to determine the shear bond strengths of composite to untreated and laser-treated dentin. Methods: Dentin surfaces from freshly extracted permanent molar teeth were subjected to laser treatment with an Nd: YAG laser using different laser pulse rates and power settings. The effect of application of a laser enhancing gel was also investigated.