五种分离的镍钛旋转锉系统在根管根尖部分的微渗漏
Microleakage of five separated nickel-titanium rotary file systems in the apical portion of the root canal.
作者信息
Hasheminia Seyed Mohsen, Farhad Alireza, Davoudi Hamidreza, Sarfaraz Dorna
机构信息
Dental Materials Research Center, Department of Endodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
Dental Research Center, Department of Endodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
出版信息
Dent Res J (Isfahan). 2022 Jun 1;19:46. eCollection 2022.
BACKGROUND
The aim of this study was to evaluate the rate of apical microleakage following the fracture of five types of nickel-titanium rotary file systems (ProTaper Universal, Mtwo, RaCe, Revo-s, HeroShaper) in the apical one-third of the canal.
MATERIALS AND METHODS
In this laboratory experiment, 49 mandibular premolars were collected and randomly divided into seven groups. Root canal treatment was performed by five different rotary file systems with different cross-sections. All files, except in the control groups, were scratched at the 3-mm end by a handpiece. After separation of the apical end of the file in the root canal, the apical seal was measured, using the fluid infiltration technique. Data were analyzed in SPSS, using one-way ANOVA and Tamhane's T2 tests at < 0.05.
RESULTS
The Hero Shaper and RaCe files showed the highest (3.14 μL/min) and the lowest (2.51 µL/min) rates of microleakage over time, respectively. There were significant differences between the Hero Shaper and RaCe files and between Hero Shaper and ProTaper files in terms of microleakage (Tamhane's T2 tests, < 0.05).
CONCLUSION
The presence of a separated file and its cross-section type affects the apical microleakage.
背景
本研究的目的是评估五种镍钛旋转锉系统（ProTaper Universal、Mtwo、RaCe、Revo-s、HeroShaper）在根管根尖三分之一处折断后根尖微渗漏的发生率。
材料与方法
在本实验室实验中，收集了49颗下颌前磨牙并随机分为七组。使用五种不同横截面的旋转锉系统进行根管治疗。除对照组外，所有锉在距末端3毫米处用手机刮擦。在根管内锉的根尖端分离后，采用液体渗透技术测量根尖封闭情况。数据在SPSS中进行分析，使用单向方差分析和Tamhane's T2检验，P<0.05。
结果
随着时间的推移，Hero Shaper锉和RaCe锉分别显示出最高（3.14μL/分钟）和最低（2.51μL/分钟）的微渗漏率。在微渗漏方面，Hero Shaper锉和RaCe锉之间以及Hero Shaper锉和ProTaper锉之间存在显著差异（Tamhane's T2检验，P<0.05）。
结论
锉分离的存在及其横截面类型会影响根尖微渗漏。
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