Comparison of Three Techniques for Preparing Oval-shaped Root Canals

被引:49
|
作者
Taha, Nessrin A. [1 ,2 ]
Ozawa, Toshiko [3 ]
Messer, Harold H. [2 ]
机构
[1] Jordan Univ Sci & Technol, Conservat Dent Dept, Irbid 21110, Jordan
[2] Univ Melbourne, Melbourne Dent Sch, Melbourne, Vic, Australia
[3] Tsurumi Univ, Sch Dent Med, Yokohama, Kanagawa, Japan
关键词
Endodontic instruments; oval canals; root canal preparation; MICRO-COMPUTED-TOMOGRAPHY; ANATOMIC ENDODONTIC TECHNOLOGY; INSTRUMENTATION TECHNIQUES; ROTARY INSTRUMENTS; MANDIBULAR MOLARS; APICAL; 3RD; HAND; IRRIGATION; QUALITY; SYSTEMS;
D O I
10.1016/j.joen.2009.11.015
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Introduction: This study compared three techniques for preparing oval-shaped root canals: Anatomic Endodontic Technology (AET), hand instruments (Hedstrom files; Dentsply Maillefer, Ballaigues, Switzerland), and rotary nickel-titanium (Endo Wave; Morita, Osaka, Japan) instruments with regard to cleaning ability and final canal shape. Methods: Three groups each of 13 extracted human mandibular premolars with oval-shaped canals were used. After canal preparation, teeth were sectioned at three levels (coronal middle, and apical), photographed to assess cross-sectional canal shape, and processed for histologic evaluation of canal wall planing and the presence of debris. Results: None of the techniques resulted in completely prepared and cleaned canals. No significant difference was found among the three techniques with regard to untouched surface, cross-sectional area, remaining fins, and canal shape at the three levels. Rotary NiTi instruments resulted in significantly less debris in the apical third compared with AET and hand instrumentation. Conclusions: AET did not perform better than rotary NiTi or hand instruments in oval-shaped canals. (J Endod 2010;36:532-535)
引用
收藏
页码:532 / 535
页数:4
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