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根管预备型号与充填温度对热牙胶充填根尖微渗漏的影响

, PP. 684-688

Keywords: 连续波充填技术,根尖微渗漏,根管预备型号,温度,透明牙

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Abstract:

目的评价根管预备型号与充填温度对充填后根管根尖微渗漏的影响。方法收集健康单根管前磨牙,Protaper镍钛系统行根管预备,根据完成锉型号分为F1~F6组(其中F6指0.60mm,0.06锥度,是预备至F5后采用K锉逐步后退法预备而成)。组内根据充填温度分为高、低温组,各7颗。除根尖3mm,牙体表面涂布2层指甲油。染色,制作透明牙后,牙科显微镜下测量根尖染料渗入深度,记录并统计分析。结果充填温度对根尖微渗漏的影响无统计学差异(P>0.05),根管预备型号(F1~F6)对根尖微渗漏的影响有统计学差异(P<0.05),充填温度与预备型号两因素间无交互效应(P>0.05)。F2与其他各组根尖微渗漏差异均有统计学意义(P<0.05),F1与F3和F4组差异无统计学意义(P>0.05),与其他组间差异有统计学意义(P<0.05);F6与F1~F3组差异有统计学意义(P<0.05),与F4和F5组差异无统计学意义(P>0.05)。结论热牙胶充填温度对根尖微渗漏无影响,而根管预备型号对根尖微渗漏有影响,预备型号为F2时,根尖微渗漏最小。

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