J Korean Acad Pediatr Dent. 2001;28(4): 728-734.
ANALYSIS OF ER:YAG LASER IRRADIATION ON CUTTING EFFICACY OF ENAMEL AND DENTIN
홍성수, 이상호, 이창섭, 김수관
조선대학교 치과대학 소아치과학 교실, 조선대학교 구강생물학연구소
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ABSTRACT
The purpose of this study was to investigate the effects of Er:YAG laser on cutting of efficacy of enamel and dentin in primary and permanent teeth. We used the enamel and dentin specimens of human teeth which contain the physiologic saline and maintain the pulpal pressure in dentinal tubules. Each specimen was exposed to Er:YAG laser with non-contact mode under different treatment condition of irradiation energy, pulse repetition rate. We investigated the cutting efficacy of Er:YAG laser by Scanning Intensity Microscopy, and obtained following results. 1. Cutting volume of enamel and dentin in primary and permanent teeth were increased by increasing the irradiation energy, pulse repetition rate. 2. Cutting volume of primary teeth was larger than that of permanent teeth. 3. Cutting volume of dentin was larger than that of enamel in primary and permanent teeth. From these results, Er:YAG laser would be more effective in cutting dentin than enamel, and in cutting primary teeth than permanent teeth for clinical application.
Keywords: Laser | Er:YAG | Cutting efficacy | Enamel | Dentin
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