Hol : YAGレーザーによる硬組織切削面の形態学的研究

抄録

Abstract : In this study, the morphological changes of the hard tissue structure after Hol : YAG laser ablation were investigated by a macroscope and an electron scanning microscope. The apices of extracted human teeth were resected by the way of apicoectomy. The holes for examining the effectiveness to the bone tissue were made on the buccal surface of the rabbit’s mandibula using Hol : YAG laser. The average setting conditions of the laser were approximately 1.0 J and 10 pulse/sec. Under the copious water flow, this experiment was carried out. Consequently, macroscopic and scanning electron microscopic inspection showed some degree of thermal damage after Hol : YAG laser ablation. Although Hol : YAG laser ablation produced some signs of thermal damage, we think that the characteristics of this laser system provide certain advantages for special clinical indications (e. g. arthroscopic surgery) because of its fine fibers.