The Effect of Root Preparation Technique and Instrumentation Length on the Development of Apical Root Cracks

被引：55

作者：

Adorno, Carlos G. ^{[1
]}

Yoshioka, Takatomo ^{[1
]}

Suda, Hideaki ^{[1
]}

机构：

[1] Tokyo Med & Dent Univ, Bunkyo Ku, Tokyo 1138549, Japan

来源：

JOURNAL OF ENDODONTICS | 2009年 / 35卷 / 03期

关键词：

Apical root cracks; preparation; vertical root fracture; working length; CANAL PREPARATION; CURVED CANALS; FRACTURE; TEETH; RESISTANCE; LOCATION; FORAMEN; SYSTEMS;

D O I：

10.1016/j.joen.2008.12.008

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

The purpose of this study was to compare the effects of root canal preparation techniques and instrumentation length on the development of apical root cracks. Forty extracted mandibular premolars with straight roots were randomly selected and mounted on resin blocks with simulated periodontal ligaments, and the apex was exposed. The teeth were divided into four groups of 10 teeth each for different canal preparation techniques and instrumentation lengths: group A: step-back preparation (SB) with stainless steel files (SF) using root canal length (RCL) to guide instrumentation length; group 13: SB using RCL - 1 mm; group C: crown-down preparation (CD) with Profile using RCL; and group D: CD with PF using RCL - 1 mm. Digital images of the instrumentation sequence were compared for each tooth. Statistical analysis revealed a significant effect of instrumentation length (p < 0.05) but no significant effect of preparation technique (p > 0.05) on the development of apical cracks. (J Endod 2009;35:389-392)

引用

页码：389 / 392

页数：4

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