J Endod:Gentlefile, HyFlex EDM合ProTaper Next系统的清理和成形能力比较:一项micro-CT和SEM分析

2020-06-05 lishiting MedSci原创

这篇体外研究的目的是为了评估独特的不锈钢旋转系统(Gentlefile; MedicNRG, Kibbutz Afikim, Israel)与2种镍钛系统的清理和成形能力。

这篇体外研究的目的是为了评估独特的不锈钢旋转系统(Gentlefile; MedicNRG, Kibbutz Afikim, Israel)与2种镍钛系统的清理和成形能力。

研究将30颗人的弯曲度为15°至25°的下颌前磨牙平均分配至3组,最终预备分别使用Gentlefile Red (#23/0.04), HyFlex EDM OneFile (#25/0.08; Coltene/Whaledent, Altstätten, Switzerland)和ProTaper Next X2 (#25/0.06v; Dentsply Sirona, Ballaigues, Switzerland) (n = 10/each)。在预备前后,通过micro-CT评估未触及根管区域、体积变化和偏移。通过SEM随机在距离根尖孔1-7 mm处选取根管壁的5个区域进行观察,并通过5-point得分系统评估表面碎屑和玷污层。采用Kruskal-Wallis检验和post hoc Dunn's pairwise comparison检验以及Bonferroni correction和Wilcoxon signed-rank检验对数据进行比较和评估(α = 5%)。

结果显示,所有器械预备过程中未产生操作误差。3组中的体积改变和未触及区域未见显著性差异(P > .05)。与ProTaper Next相比,Gentlefile在距离根尖孔5-7 mm的距离产生更小的偏移(P < .05)。Gentlefile产生的碎屑得分小于ProTaper Next,并且去除玷污层的效果优于其他组(P < .05)。所检测的任何一种系统都无法做到完全干净的清除。

结论:与HyFlex EDM和ProTaper Next相比,采用Gentlefile进行根管预备在根中水平会发生更小的偏移并且清除效果更佳。

原始出处:

Pyae Hein Htun, Arata Ebihara, et al. Cleaning and Shaping Ability of Gentlefile, HyFlex EDM, and ProTaper Next Instruments: A Combined Micro-computed Tomographic and Scanning Electron Microscopic Study. J Endod., 2020 May 14;S0099-2399(20)30237-5. doi: 10.1016/j.joen.2020.03.027.

 

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    2021-01-04 feather89
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    2021-03-18 xjy02
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    2020-06-07 sunylz

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