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KMID : 1004520120280030245
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Journal of Dental Rehabilitation and Applied Science
2012 Volume.28 No. 3 p.245 ~ p.252
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The Effect of Glide Path on Canal Centering Ability in Reciprocating File System
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Zang Ki-Choul
Kim Jin-Woo
Cho Kyung-Mo
Park Se-Hee
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Abstract
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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 ㎜ level. Except 1 and 6 ㎜ level, WaveOne groups had significant less centering ration than Reciproc groups.
At 6 ㎜ 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.
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KEYWORD
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Centering ratio, Glide path, PathFile, Reciproc, Reciprocating, WaveOne
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