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Analysis of the occurrence of the mesiobuccal canal in maxillary first molars using cone-beam computed tomography in a Brazilian population

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Retrospective analysis reveals the presence of the second mesiobuccal canal in 57.4% of maxillary first molars, indicating anatomical complexity.

Presence of the second mesiobuccal canal in maxillary first molars was found in over 50% of cases, highlighting its anatomical importance.
Among 221 analyzed molars, 93% had three roots, confirming a common root structure in this population.
This observational analysis utilized cone-beam computed tomography on data from a Brazilian clinic, leading to significant morphological insights.
The findings support the need for careful examination during endodontic procedures, as overlooked canals could lead to treatment failure.

Nishijo et al. (2025) studied this question.

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Retrospective analysis reveals the presence of the second mesiobuccal canal in 57.4% of maxillary first molars, indicating anatomical complexity.