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.
Key Words
Anatomy
cone-beam computed tomography
endodontics
maxillary first molar
