J Endod:中心往复和偏心持续旋转运动模式的机械根管预备评估:一项micro-CT研究

2020-07-21 lishiting MedSci原创

这篇研究的目的是通过micro-CT比较Reciproc和XP-endo Shaper系统对下颌磨牙近中根管的预备,评估牙本质和根管体积变化、未接触牙本质壁百分比、硬组织碎屑累积的量等

这篇研究的目的是通过micro-CT比较Reciproc和XP-endo Shaper系统对下颌磨牙近中根管的预备,评估牙本质和根管体积变化、未接触牙本质壁百分比、硬组织碎屑累积的量和根尖1/3的根管偏移程度。

研究选取了24颗具有双近中根管及单个根尖孔的解剖配对下颌磨牙,并基于预备系统随机分为2个实验组(n=12)。样本在预备前后通过SkyScan 1176 microtomograph (Bruker-microCT, Kontich, Belgium)进行扫描,分辨率为17.42 μm。数据通过Student's t检验和Mann-Whitney检验进行统计学评估,显著性水平设置为5%。

结果显示,2者间整个根管和根管冠及中1/3的未接触表面积存在显著性差异,并且XP-endo Shaper组的未接触表面积最低(P <0.05)。Reciproc组在整个根管以及根管中及尖1/3累积硬组织碎屑的量更高。2组间牙本质移除的体积或根管体积及表面积的增加无显著性差异(P >0.05)。

结论:在根管系统中,XP-endo Shaper系统比Reciproc系统接触更多根管壁并且产生更少的硬组织碎屑。

原始出处:

P O F Fernandes, L G Freire, et al. Assessment of mechanical root canal preparation with centric reciprocating or eccentric rotary kinematics: a micro-computed tomography study. J Endod., 2020 Jun 18;S0099-2399(20)30395-2. doi: 10.1016/j.joen.2020.06.005.

 

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    2020-08-01 yzh409
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    2020-09-29 xjy02
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    2020-07-21 ms5000000617797190

    学习了!

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