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使用ProTaper Next、OneShape和Hyflex EDM进行根管预备后牙本质裂纹形成的比较评估。

Comparative evaluation of dentinal crack formation after root canal preparation using ProTaper Next, OneShape, and Hyflex EDM.

作者信息

Das Sanjib, Pradhan Prasanti Kumari, Lata S, Sinha Sachidananda Prasad

机构信息

Department of Conservative Dentistry and Endodontics, Kalinga Institute of Dental Sciences, KIIT University, Bhubaneswar, Odisha, India.

出版信息

J Conserv Dent. 2018 Mar-Apr;21(2):153-156. doi: 10.4103/JCD.JCD_219_17.

Abstract

INTRODUCTION

The purpose of this study was to compare the incidence of dentinal crack formation after root canal preparation using ProTaper Next, OneShape, and Hyflex electrodischarge machining (HEDM).

MATERIALS AND METHODS

A total of 75 extracted mandibular premolars were selected. The root canals were instrumented using ProTaper Next, OneShape, and HEDM rotary files. All roots were horizontally sectioned at 3, 6, and 9 mm from apex with slow-speed saw under water cooling. The sections were observed under a stereomicroscope at ×25 to determine the absence or presence of crack. Data were analyzed using test and one-way ANOVA.

RESULTS

ProTaper Next and HEDM produced significantly less cracks than OneShape.

CONCLUSION

Within the limitation of this study, it can be concluded that nickel-titanium instruments may cause cracks on the root surface. ProTaper Next and HEDM tend to produce less number of cracks as compared to OneShape.

摘要

引言

本研究的目的是比较使用ProTaper Next、OneShape和Hyflex放电加工(HEDM)进行根管预备后牙本质裂纹形成的发生率。

材料与方法

共选取75颗拔除的下颌前磨牙。使用ProTaper Next、OneShape和HEDM旋转锉对根管进行预备。所有牙根在水下冷却条件下用慢速锯从根尖3、6和9mm处水平剖切。在体视显微镜下以×25放大倍数观察切片,以确定是否存在裂纹。使用检验和单因素方差分析对数据进行分析。

结果

ProTaper Next和HEDM产生的裂纹明显少于OneShape。

结论

在本研究的局限性范围内,可以得出结论,镍钛器械可能会导致牙根表面出现裂纹。与OneShape相比,ProTaper Next和HEDM产生的裂纹数量往往较少。

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