Anatomical Configuration of the MB2 Canal Using High-Resolution Cone-Beam Computed Tomography.

IF 3.5 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Journal of endodontics Pub Date : 2025-01-17 DOI:10.1016/j.joen.2025.01.006

Luciana Magrin Blank-Gonçalves, Emmanuel João Nogueira Leal da Silva, Monikelly do Carmo Chagas Nascimento, Ana Grasiela Limoeiro, Luiz Roberto Coutinho Manhães-Jr

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Abstract

Introduction: This study aimed to evaluate the anatomical configuration of the mesiobuccal (MB) root of the maxillary first molar and to assess the prevalence of the second mesiobuccal canal (MB2).

Methods: A total of 307 high-resolution cone-beam computed tomography images of maxillary molars were analyzed. These images were classified based on the anatomical configuration and prevalence of the MB2 canal. An experienced evaluator examined the images by dynamically navigating through the entire tomographic volume, making necessary adjustments to the MB root in the axial, sagittal, and coronal planes along the canal trajectory. The anatomical configurations were classified according to Vertucci's classification.

Results: Overall, the prevalence of the MB2 canal within the sample was 90%. The most common anatomical configuration of the MB root was type IV (35%), followed by type VI (25%). MB roots with a single foramen were observed in 24% of the specimens, while 77% exhibited 2 foramina. No statistically significant differences were found between genders regarding prevalence and anatomical classifications (P < .05).

Conclusions: The MB2 canal is highly prevalent, with the most common anatomical configuration being Vertucci's type IV, followed by type VI.

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MB2管的高分辨率CBCT解剖结构。

目的：研究上颌第一磨牙中颊根的解剖形态，评估中颊根管（mesiobuccal canal, MB2）的发生率。材料与方法：对307张上颌磨牙高分辨率锥形束ct （cone-beam computed tomography， CBCT）图像进行分析。这些图像根据MB2管的解剖结构和流行程度进行分类。一位经验丰富的评估员通过动态导航整个断层扫描体积来检查图像，并沿着椎管轨迹对中颊根在轴状面、矢状面和冠状面进行必要的调整。根据Vertucci（2005）对解剖构型进行分类。结果：总体而言，样本中MB2管的患病率为90%。中颊根最常见的解剖构型是IV型（35%），其次是VI型（25%）。24%的标本中有单孔的中颊根，67%的标本中有两个孔。在患病率和解剖分类方面，性别之间没有统计学上的显著差异。结论：MB2根管非常普遍，解剖构型以Vertucci IV型最为常见，其次为VI型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of endodontics 医学-牙科与口腔外科

CiteScore

8.80

自引率

9.50%

发文量

224

审稿时长

42 days

期刊介绍： The Journal of Endodontics, the official journal of the American Association of Endodontists, publishes scientific articles, case reports and comparison studies evaluating materials and methods of pulp conservation and endodontic treatment. Endodontists and general dentists can learn about new concepts in root canal treatment and the latest advances in techniques and instrumentation in the one journal that helps them keep pace with rapid changes in this field.