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The Effect of Glide Path on Canal Centering Ability in Reciprocating File System  

Zang, Ki-Choul (Department of Conservative Dentistry, Gangneung-Wonju National University, School of Dentistry)
Kim, Jin-Woo (Department of Conservative Dentistry, Gangneung-Wonju National University, School of Dentistry)
Cho, Kyung-Mo (Department of Conservative Dentistry, Gangneung-Wonju National University, School of Dentistry)
Park, Se-Hee (Department of Conservative Dentistry, Gangneung-Wonju National University, School of Dentistry)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.28, no.3, 2012 , pp. 245-252 More about this Journal
Abstract
The purpose of this study was to evaluate the influence of glide path on canal centering ratio after instrumentation with different single file systems; WaveOne and Reciproc. Reciproc R25 (VDW), WaveOne Primary (Dentsply Maillefer) and PathFile #13, 16, 19 (Dentsply Maillefer) were used in this study. In no glide path groups, Reciproc files and WaveOne files used for canal preparation without glide path. In glide path groups, the PathFile were used before canal preparation. Methylene blue dye was introduced into the canal to obtain a clear pre-instrumentation image. Pre-instrumentation images and post-instrumentation images were scanned using Epson Perfection V700 Photo scanner (Epson, Nagano, Japan). Transparencies of post-instrumentation images were changed and superimposed on pre-instrumentation images using Adobe Photoshop CS 3 (Adobe Systems Incorporated, San Jose, CA, USA). The centering ratio was calculated for each instrumented canal using the following formula: CR=|X1-X2|/Y. It was statistically analyzed using two-way ANOVA at 95% confidential level. The centering ratio in glide path groups were significant less than it in no glide path groups at 3, 4, 5 and 6 mm level. Except 1 and 6 mm level, WaveOne groups had significant less centering ration than Reciproc groups. At 6 mm level, there was no significant difference between WaveOne and Reciproc. In the limitation of this study, creation of a previous glide path before reciprocating motion instrumentation in curved canal appears to be appropriate and WaveOne system can be used for preparation of curved canal without severe aberrations.
Keywords
Centering ratio; Glide path; PathFile; Reciproc; Reciprocating; WaveOne;
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