Paleker Farzana, van der Vyver Peet J
Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
J Endod. 2017 Apr;43(4):609-612. doi: 10.1016/j.joen.2016.11.025. Epub 2017 Feb 9.
The preparation of a glide path before the introduction of rotary nickel-titanium instruments is a standard adjunct to ensure increased safety during root canal preparation. The aim of this study was to compare the mean preparation time of manual instrumentation with K-files, G-Files, and the ProGlider instrument to prepare a glide path in curved root canals.
The mesial canals of 90 mandibular molars (with curvature angles between 25° and 35°) were selected. The specimens were randomly divided into 3 groups with 30 canals each, and canal preparations were performed by an endodontist who used #10-15-20 stainless steel manual K-files (group KF), #10 stainless steel manual K-file followed by #12-17 G-File instruments (group GF), and #10 stainless steel manual K-file followed by #16 ProGlider instrument (group PG). The total time it took to prepare the glide paths was recorded with an electronic stopwatch. New instruments were used for each canal.
Glide path enlargement with the PG group (27.9 ± 8.6 seconds) and GF group (41.9 ± 20.1 seconds) was shown to be statistically significantly faster than stainless steel KF group (74.9 ± 24.1 seconds) by using analysis of variance (P < .05). There was no statistically significant difference observed between the mean preparation times of the PG and GF groups (P < .05).
Glide path preparation times with the rotary instrument groups were significantly faster than with stainless steel manual K-files.
在使用旋转镍钛器械之前准备滑行路径是一项标准辅助操作，以确保根管预备过程中的安全性提高。本研究的目的是比较使用K锉、G锉和ProGlider器械进行手动器械预备在弯曲根管中制备滑行路径的平均预备时间。
选择90颗下颌磨牙的近中根管（弯曲角度在25°至35°之间）。将标本随机分为3组，每组30个根管，由一名牙髓病医生进行根管预备，分别使用#10 - 15 - 20不锈钢手动K锉（KF组）、#10不锈钢手动K锉后接#12 - 17 G锉器械（GF组）以及#10不锈钢手动K锉后接#16 ProGlider器械（PG组）。使用电子秒表记录制备滑行路径所需的总时间。每个根管使用新器械。
通过方差分析显示，PG组（27.9 ± 8.6秒）和GF组（41.9 ± 20.1秒）的滑行路径扩大明显比不锈钢KF组（74.9 ± 24.1秒）快（P <.05）。PG组和GF组的平均预备时间之间未观察到统计学上的显著差异（P <.05）。
旋转器械组的滑行路径预备时间明显比不锈钢手动K锉快。
