Wavelength Dependency and Plasma Ablation of Free Electron Laser Irradiation to Dental Hard Tissues

Abstract

Wavelength tunable free electron laser, FEL, was applied to analyze efficacy and mechanism of laser ablation for dental hard tissues. Irradiation of LEBRA-FEL, Nihon University, on the tooth sections at the wavelength range from 2.0 to 6.0 μm, the wavelength-dependency and also tissue-specificity were clearly observed. Observation during the pit formation by the irradiation, it was suggested the ablation being a type of plasma ablation.