Radicular dentinal defects incidence after using EDTA gel with different root canal instrumentation techniques

Mohamed El Sayed, Maryam Al amoud, Malak Rashid M'gharfaoui
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引用次数: 4

Abstract

Objectives: The purpose of this study was to compare the incidence of dentinal defect formation after using EDTA gel during root canal preparations by three different instrumentation techniques. Materials and Methods: One hundred and forty maxillary central incisors were decoronated and roots were embedded in resin blocks. Twenty samples were left unprepared (Control group), and the remaining 120 samples were divided into three groups. Each group was divided equally into two subgroups according to the use of EDTA gel during root canal instrumentation. Roots were prepared with hand file (Group 1), ProTaper Universal (Group 2) and WaveOne (Group 3). Roots were sectioned 3, 6, and 9 mm from the apex, and the cut surface was observed microscopically and the presence of dentinal defects was checked. The differences between groups were analyzed using Fisher′s exact test. Results: Unprepared roots did not show any dentinal defects. Dentinal defects were observed in all prepared roots. The difference between experimental groups and subgroups regarding the incidence of dentinal defects was not statistically significant. Conclusion: Canal preparation using hand or rotary files created radicular dentinal defects. The use of EDTA gel during root canal preparation did not reduce the incidence of dentinal defects.
EDTA凝胶在不同根管预备技术下的根状牙本质缺损发生率
目的:本研究的目的是比较三种不同的器械技术在根管准备过程中使用EDTA凝胶后牙本质缺损形成的发生率。材料与方法:对140个上颌中切牙进行装饰,根嵌于树脂块中。20个样本未做准备(对照组),其余120个样本分为三组。根据根管预备时EDTA凝胶的使用情况,将各组平均分为两个亚组。用手锉(组1)、ProTaper Universal(组2)和WaveOne(组3)制备根。根分别从根尖处切3、6、9 mm,显微镜下观察切面,检查有无牙髓缺损。使用Fisher精确检验分析组间差异。结果:未准备根无牙本质缺损。所有制备的根均有牙本质缺损。实验组与亚组牙本质缺损发生率比较,差异无统计学意义。结论:手工预备根管或旋转锉预备根管可造成根状牙本质缺损。在根管预备过程中使用EDTA凝胶并没有减少牙本质缺损的发生率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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