エナメル質及び象牙質に対するEr:YAGレーザー照射の影響 : 照射出力による蒸散幅,蒸散深度及び表面微細構造の変化に関して

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Er: YAG lasers have been widely implemented in dental clinics. However, there have been few reports on measuring transpiration rate and changes in the microstructure of enamel and dentin. The purpose of this study was to measure the transpiration rate of the Er: YAG laser and to observe changes in the microstructure by SEM. The following findings were obtained.: 1. The transpiration rate of enamel and dentin was increased along with increasing laser energy. The transpiration rate of dentin was larger than that of enamel. 2. The width of transpiration of C800F (the width laser fiber tip was 800 μm) was larger than that of C400F (the width laser fiber tip was 400 μm), but the depth of transpiration of C400F was larger than that of C800F. 3. The microstructure of enamel showed a solid external structure at low energy and a melted, sintering structure with the laser at high energy. In the dentin, a sandstone-like structure was observed. It was obtained that the smear plug was removed from dentinal tubules. However, no change in dentin was observed between the microstructure and laser energy. 4. Different images at transpiration depth and microstructure in different areas of the same laser irradiated field were observed for both enamel and dentin. These data suggest that the transpiration rate of Er: YAG laser rises by higher energy irradiation. Additionally, the histological structure at high energy irradiation was different from that changed at low energy irradiation, and the irradiated energy was different in the same irradiation part.
福岡歯科大学学会の論文
2006-12-25

エナメル質及び象牙質に対するEr:YAGレーザー照射の影響 : 照射出力による蒸散幅,蒸散深度及び表面微細構造の変化に関して

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