用于根管充填物取出的倒刺锉与扭转锉：根尖部挤出碎屑的评估
Reciproc versus Twisted file for root canal filling removal: assessment of apically extruded debris.
作者信息
Altunbas Demet, Kutuk Betul, Toyoglu Mustafa, Kutlu Gizem, Kustarci Alper, Er Kursat
机构信息
Department of Endodontics, Faculty of Dentistry, Cumhuriyet University, Turkey.
Department of Endodontics, Oral and Dental Health Center Republic of Turkey Ministry of Health, Turkey.
出版信息
J Istanb Univ Fac Dent. 2016 Apr 1;50(2):31-37. doi: 10.17096/jiufd.96734. eCollection 2016.
PURPOSE
The aim of this study was to evaluate the amount of apically extruded debris during endodontic retreatment with different file systems.
MATERIALS AND METHODS
Sixty extracted human mandibular premolar teeth were used in this study. Root canals of the teeth were instrumented and filled before being randomly assigned to three groups. Guttapercha was removed using the Reciproc system, the Twisted File system (TF), and Hedström-files (H-file). Apically extruded debris was collected and dried in pre-weighed Eppendorf tubes. The amount of extruded debris was assessed with an electronic balance. Data were statistically analyzed using one-way ANOVA, Kruskal-Wallis, and Mann-Whitney U tests.
RESULTS
The Reciproc and TF systems extruded significantly less debris than the H-file (p<0.05). However, no significant difference was found between the Reciproc and TF systems.
CONCLUSION
All tested file systems caused apical extrusion of debris. Both the rotary file (TF) and the reciprocating single-file (Reciproc) systems were associated with less apical extrusion compared with the H-file.
目的
本研究的目的是评估在使用不同锉系统进行根管再治疗期间根尖挤出碎屑的量。
材料与方法
本研究使用了60颗拔除的人类下颌前磨牙。在将牙齿随机分为三组之前，先对根管进行预备和充填。使用Reciproc系统、Twisted File系统（TF）和Hedström锉（H锉）去除牙胶。将根尖挤出的碎屑收集起来，放在预先称重的艾本德管中干燥。用电子天平评估挤出碎屑的量。使用单因素方差分析、Kruskal-Wallis检验和Mann-Whitney U检验对数据进行统计学分析。
结果
Reciproc系统和TF系统挤出的碎屑明显少于H锉（p<0.05）。然而，Reciproc系统和TF系统之间未发现显著差异。
结论
所有测试的锉系统都会导致碎屑向根尖挤出。与H锉相比，旋转锉（TF）和往复单锉（Reciproc）系统导致的根尖挤出较少。
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