Systematic Reviews
Copyright ©The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Stomatol. May 20, 2015; 4(2): 108-114
Published online May 20, 2015. doi: 10.5321/wjs.v4.i2.108
Effects of different root canal preparation methods on root fracture resistance: A systematic review of the literature
Xiao-Guang Li, Qing Wang
Xiao-Guang Li, Qing Wang, Laboratory of Oral Biomedicine, School of Stomatology, Shandong University, Jinan 250000, Shandong Province, China
Author contributions: Li XG and Wang Q contributed equally to this work; Li XG and Wang Q designed the research; Li XG performed the research, analyzed the data and wrote the paper; Wang Q modified the paper.
Conflict-of-interest: The authors deny any conflicts of interest related to this study.
Data sharing: Technical appendix and dataset available from the corresponding author at Participants gave informed consent for data sharing.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See:
Correspondence to: Qing Wang, Professor, Laboratory of Oral Biomedicine, School of Stomatology, Shandong University, 44-1 West Wenhua Road, Lixia District, Jinan 250000, Shandong Province, China.
Telephone: +86-531-88382623
Received: November 16, 2014
Peer-review started: November 16, 2014
First decision: January 8, 2015
Revised: January 25, 2015
Accepted: February 10, 2015
Article in press: February 12, 2015
Published online: May 20, 2015
Core Tip

Core tip: There were different opinions on the effect of root fracture resistance using nickel-titanium rotary instrument. The present study carried out Meta-analysis on the references related to the influences on root fracture resistance of two different root canal preparation methods. The result can provide evidence for clinical therapy.The present study confirms that the effects of root canal preparation by Ni-Ti rotary instruments or manual stainless steel instruments on root fracture resistance are not statistically significant. These two preparation methods are both safe and effective if dentin is not excessively cut under normal chewing conditions.