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TITLE:

INCIDENCE OF A 2ND MESIO-BUCCAL CANAL IN THE FIRST PERMANENT MOLAR OF MAXILLA

AUTHORS:

Fatima Kanwal, Sadiq ullah, Kanwal Safeer

ABSTRACT:

Introduction: The complexity of the root canal morphology leads to the risk of endodontic treatment failure due to the missed canal. The availability of Cone-beam Computed Tomography (CBCT) contributed to the evaluation of the second mesio-buccal canals in the maxillary first molars. Aim: To investigate the presence of the second buccal canals (MB2), classify the morphology of the canals according to the Vertucci classification, and measure the distance between the MB1 and MB2 channels. Materials and Methods: 72 CBCT scans, including 115 permanent first maxillary molars, were assessed by an endodontist and an oral radiologist separately using Dicom software to examine the morphology of the buccal root canal. The oral radiologist and endodontist individually assessed scans in frontal, axial and oblique views to examine the canal configuration. The Vertucci classification was used to classify the canal configurations. Statistical tests were performed to assess gender variability and difference on the side of the curve. Results: out of 115 assessed images; 30.4% of the samples had a second mesiobuccal canal. The most common canal configuration was type I (60.9%) in the mesio-buccal root. The mean distance between MB1 and MB2 channels was 2.39 mm in women and 2.56 mm in men. Conclusion: The presence of a second canal in the mesio-buccal root of the maxillary permanent molar is significant in patients. CBCT can be an effective tool for detecting the MB2 canal and other complexities of the canal system to achieve clinical success. Keywords: CBCT, Endodontics, Buccal canal, Vertucci classification

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