3种机用镍钛锉对弯曲根管成形能力的比较

Journal of Oral Science Research(2012)

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Abstract
目的:比较Twisted File(TF)、ProTaper和Mtwo这3种机用镍钛锉对弯曲根管的成形效果。方法:树脂模拟弯曲根管,分别用TF锉、ProTaper锉、Mtwo锉进行预备,测量预备前后工作长度、根管中轴线和根管弯曲度的变化量。结果:根备后工作长度丧失量:TF组少于Mtwo组(P<0.05);根管中轴线的变化量:根尖部TF组少于Mtwo和ProTaper组(P<0.05),弯曲部TF组与ProTaper组少于Mtwo组(P<0.05);根管弯曲度改变量:TF组与ProTaper组少于Mtwo组(P<0.05)。结论:TF锉在预备弯曲根管时,能够较好地维持根管原始走向,防止根尖偏移,是较理想的弯曲根管预备器械。
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TF Mtwo file ProTaper file Shaping ability Curved root canals
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