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- 2018
两种功率PIPS-Er:YAG激光对根管内玷污层去除效果的比较研究
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Abstract:
摘要 目的: 比较高功率和低功率PIPS-Er:YAG激光对根管内玷污层去除效果。方法: 收集52颗下颌单根管恒前磨牙,按最后冲洗方法不同随机分为4组(n=13):0.3 W、0.9 W PIPS-Er:YAG组,超声组和注射器冲洗组(均为对照组),冲洗结束后将牙纵向劈开分成两份,随机选取一份用扫描电镜分别扫描根尖部、根中部、冠部根管壁并对残留玷污层进行评分,最后比较4组冲洗方法对玷污层去除效果。结果: 0.3 W PIPS-Er:YAG组和0.9 W PIPS-Er:YAG组对玷污层的去除效果相当(P>0.05),两组均优于超声组,但差异无统计学意义(P>0.05),而与注射器冲洗组比较差异均有统计学意义(P<0.05)。结论: 高功率和低功率的PIPS-Er:YAG激光均可促进玷污层的去除,两者去除效果相当,且均优于于超声冲洗和注射器冲洗
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