Evaluation of mesiobuccal root canal morphology and interorifice distance in maxillary first molar teeth: a CBCT study on Southeast Anatolian population

Abstract

Aims: The aim of this study was to evaluate the mesiobuccal root canal morphologies and interorifice distances of maxillary first molars using cone-beam computed tomography (CBCT). 
 Methods: CBCT images of 477 patients who had undergone CBCT for various reasons were examined and 654 maxillary first molars were included in the study according to the study criteria. 
 Results: The most common canal configuration observed in mesiobuccal roots was type II (p < 0.05). The median interorifice distance was 2.28 mm in roots with type II canal configuration, while it was measured as 2.55 mm in roots with type IV canals, and a significant difference was found depending on the presence of canal in the apical third of the root (p < 0.001). The median interorifice distance was found to be 2.58 mm in males and 2.34 mm in females, and a significant difference was detected (p < 0.001). 
 Conclusion: Various canal variations can be observed in the mesiobuccal roots of maxillary first molars, and the length of interorifice distance can predict the canal type. This information can increase the success rate of endodontic treatment.