Trunatomy、Edmax和Reciproc Blue在下颌磨牙近中颊根管弯曲根管中的根尖移位和定心能力

Apical Transportation and Centering Ability of Trunatomy, Edmax, and Reciproc Blue in Curved Mesiobuccal Canals of Mandibular Molars.

作者信息

Zargar Nazanin, Zandi Babak, Safi Yaser, Mehrabani Mahgol

机构信息

Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

出版信息

Iran Endod J. 2025;20(1):e29. doi: 10.22037/iej.v20i1.46547. Epub 2025 Jul 13.

DOI:10.22037/iej.v20i1.46547

PMID:40756758

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12318326/

Abstract

INTRODUCTION

This study compared apical transportation and centering ability of TruNatomy, EDMax, and Reciproc Blue in curved mesiobuccal canals of mandibular molars.

MATERIALS AND METHODS

This study was conducted on curved (20-40 degrees) mesiobuccal canals of 60 mandibular molars. The teeth were randomly assigned to 4 groups (=15) for instrumentation of the mesiobuccal canals with (I) TruNatomy, (II) EDMax, (III) Reciproc Blue, and (IV) Reciproc Blue+R-Pilot. Cone-beam computed tomography (CBCT) scans were obtained before and after instrumentation. Changes in canal wall thickness in mesiodistal (MD) and buccolingual (BL) directions were assessed at 1, 2, 3, and 4 mm from the apex using OnDemand software. Data were analyzed by the Kruskal-Wallis, Bonferroni, Friedman, and Fisher's exact tests (alpha=0.05).

RESULTS

TruNatomy showed significantly lower transportation than Reciproc Blue and EDMax in the apical, middle, and coronal thirds (<0.05). Reciproc Blue and EDMax had no significant difference in transportation (>0.05). Using the R-Pilot glider had no significant effect on transportation (>0.05). Canal transportation was not significantly different within each group at four distances from the apex (>0.05). TruNatomy showed significantly higher centering ability than Reciproc Blue+R-Pilot in the BL dimension at 3 mm from the apex (<0.05).

CONCLUSION

TruNatomy showed significantly lower canal transportation than Reciproc Blue and EDMax at all distances from the apex. The files had no significant difference in centering ability except at 3 mm in BL dimension, where TruNatomy had significantly higher centering ability than Reciproc Blue+R-Pilot.

摘要

引言

本研究比较了TruNatomy、EDMax和Reciproc Blue在下颌磨牙近中颊根管弯曲处的根尖移位和定心能力。

材料与方法

本研究针对60颗下颌磨牙的弯曲（20 - 40度）近中颊根管进行。将牙齿随机分为4组（每组15颗），分别使用（I）TruNatomy、（II）EDMax、（III）Reciproc Blue和（IV）Reciproc Blue + R - Pilot对近中颊根管进行预备。在预备前后获取锥形束计算机断层扫描（CBCT）图像。使用OnDemand软件在距根尖1、2、3和4毫米处评估根管壁在近远中（MD）和颊舌（BL）方向的厚度变化。数据采用Kruskal - Wallis、Bonferroni、Friedman和Fisher精确检验进行分析（α = 0.05）。

结果

在根尖、中部和冠部三分之一处，TruNatomy的移位明显低于Reciproc Blue和EDMax（P < 0.05）。Reciproc Blue和EDMax在移位方面无显著差异（P > 0.05）。使用R - Pilot滑行钻对移位无显著影响（P > 0.05）。在距根尖的四个距离处，每组内的根管移位无显著差异（P > 0.05）。在距根尖3毫米处的BL维度上，TruNatomy的定心能力明显高于Reciproc Blue + R - Pilot（P < 0.05）。