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- 2018
两种通畅锉疏通上颌磨牙MB2的根管偏移及效率的对比研究
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Abstract:
摘要 目的: 比较ProGlider和PathFile疏通上颌磨牙MB2根管偏移及效率。方法: 120颗离体上颌磨牙,CBCT筛选出具有MB2的牙齿63颗,开髓后探查MB2,纳入42颗上颌磨牙,随机分别用ProGlider和PathFile疏通,记录每颗牙疏通时间。CBCT评价疏通前后距根尖3 mm、5 mm、7 mm及根管偏离中心第一点(b点)处的偏移量及轴中心率。结果: ProGlider组疏通时间显著短于PathFile。在距根尖3 mm、7 mm处根管偏移量无显著差异;在距根尖5 mm处和b点处,ProGlider组少于PathFile组。在距根尖3 mm、5 mm、7 mm处轴中心率,两组间无显著差异;在b点处,ProGlider组显著优于PathFile组。结论: ProGlider及PathFile均能高效疏通上颌磨牙MB2,均有较好中心定位能力,ProGlider在根管弯曲处成形能力优于PathFile
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