抄録
This paper deals with the formation of re-solidified layer on dental hard tissue by irradiation of a pulse Er:YAG laser beam. Extracted human enamel is used as a specimen, and titanium dioxide powder is applied to the surface of dental hard tissue as the absorbent. Er:YAG laser beam is led to the specimen with an optical fiber. The influence of powder thickness and laser condition on re-solidified layer is investigated experimentally. The result showed that the re-solidified layer was formed on the surface of dental hard tissue by irradiation of Er:YAG laser beam, and the sufficient layer thickness of titanium dioxide powder is 10-15 mm for formation of re-solidified layer.
