机用和手用镍钛器械对不同弯曲度根管预备后的碎屑及预备效率的研究

›› 2021, Vol. 41 ›› Issue (6): 527-531.

机用和手用镍钛器械对不同弯曲度根管预备后的碎屑及预备效率的研究

顾静怡¹,徐瑞²,段薇²,黄云²,刘思琪²,吕盈²,张琴琴²,徐峥²,魏昕¹

1. 南京医科大学附属口腔医院
2. 南京医科大学附属口腔医院牙体牙髓科

收稿日期:2021-01-07 修回日期:2021-03-02 出版日期:2021-06-28 发布日期:2021-06-25
通讯作者: 魏昕 E-mail:weixinart@163.com
基金资助:
江苏高校优势学科建设工程

A comparative study on apical extrusion of debris and efficiency during curved root canal preparation using two Ni-Ti instruments

Received:2021-01-07 Revised:2021-03-02 Online:2021-06-28 Published:2021-06-25

摘要/Abstract

摘要： 目的　研究比较机用镍钛锉ProTaper Gold和手用镍钛锉ProTaper对不同弯曲度根管预备后的根尖碎屑推出量及预备效率。方法　将纳入标准收集的离体牙根管按不同的弯曲度（小于15°、0°～35°）分为组，每组再按不同类型的镍钛器械（PTG、PTH）将其随机分为个亚组（n=15）。PTG组采用ProTaper Gold机用镍钛锉进行根管预备；PTH组采用ProTaper手用镍钛锉进行根管预备。其中PTG组辅助使用X-smart电动马达按冠向下法预备至#5/.08；PTH组按冠向下法手用预备至#5/.08。使用碎屑收集装置收集并称量根管预备后的根尖碎屑推出量，同时秒表记录根管预备时间。采用单因素方差统计学分析比较实验数据。结果　根尖碎屑推出量结果显示，PTG组和PTH组对不同弯曲度根管分别预备后的根尖碎屑推出量的两两比较无统计学差异（P>0.05）。PTG组和PTH组预备不同弯曲度根管的预备时间比较结果显示，同一弯曲度组中，PTG组的预备时间均短于PTH组（P<0.05）。结论　ProTaper Gold机用镍钛锉和ProTaper手用镍钛锉预备不同弯曲度根管后均有根尖碎屑推出；ProTaper Gold机用镍钛锉比ProTaper手用镍钛锉具有较高的根管预备效率。

关键词: 关键词：镍钛器械, 根管弯曲度, 碎屑推出, 预备效率

Abstract: [Abstract] Objective The aim of this study was to evaluate the amount of apically extruded debris and efficiency during curved root canal preparation using ProTaper Gold(PTG) and ProTaper for hand use(PTH). Methods The canals were divided into 2 groups according to the curvature of canals(＜15°, 20-35°). Then each group was divided into 2 subgroups according to the Ni-Ti instruments(PTG, PTH)(n=15). The apically extruded debris of each group was collected into pre-weighed Eppendorf tubes. Then the tubes were stored in an incubator at 68 °C for 5 days and weighed using an electronic balance. Meanwhile, the time of root canal preparation was also recorded. Results No significant differences of the amount of apical debris were found among two Ni-Ti instruments when preparing curved root canals (P > 0.05). The time of root canal preparation with PTG showed significantly shorter than PTH (P < 0.05). Conclusions Two Ni-Ti instruments caused apical debris extrusion. And Root canal preparation with PTG was faster than PTH.

Key words: Keywords: Ni-Ti instruments, Curvature of root canal, Extruded debris, Efficiency of root canal preparation

中图分类号:

R781.05

顾静怡徐瑞段薇黄云刘思琪吕盈张琴琴徐峥魏昕. 机用和手用镍钛器械对不同弯曲度根管预备后的碎屑及预备效率的研究[J]. 口腔医学, 2021, 41(6): 527-531.

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