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首页> 外文期刊>Dental Materials Journal >Removal of root canal filling materials using Er:YAG laser irradiation
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Removal of root canal filling materials using Er:YAG laser irradiation

机译：使用Er：YAG激光辐照去除根管充填材料

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The purpose of this study was to examine the ability of Er:YAG laser to remove root canal filling materials. The root canals of 21 extracted human anterior teeth were enlarged, and then obturated with gutta-percha points and sealer by lateral condensation. Filling materials were removed from root canals using Er:YAG laser irradiation at three energy output levels (30, 40, and 50 mJ/ pulse), and the corresponding time required for material removal at each energy output level was recorded. The amount of remaining filling material and the degree of dentin ablation in the canal wall were assessed using microfocus X-ray CT before and after removal. At 30 mJ, the time required for root canal filling material removal was significantly longer than at energy outputs of 40 and 50 mJ (p <0.01). On filling material remnants and the degree of dentin ablation, these parameters were not significantly different among the three energy outputs. In conclusion, these results suggested that Er:YAG laser irradiation is capable of removing root canal filling materials.
机译：这项研究的目的是检查Er：YAG激光去除根管充填材料的能力。将21个拔出的人类前牙的根管扩大，然后通过侧向凝结，用牙胶-胶合点和封闭剂封闭。使用Er：YAG激光照射以三种能量输出水平（30、40和50 mJ /脉冲）从根管中去除填充材料，并记录在每种能量输出水平上去除材料所需的相应时间。切除前后，使用微聚焦X射线CT评估管壁中的剩余填充材料量和牙本质消融程度。在30 mJ时，根管充填材料去除所需的时间明显长于40和50 mJ的能量输出时（p <0.01）。在填充材料残余物和牙本质消融程度方面，这三个能量输出之间的这些参数没有显着差异。总之，这些结果表明，Er：YAG激光辐照能够去除根管充填材料。

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