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Relationship Between Mandibular Premolar Root Canal Morphology and Distolingual Root in Mandibular First Molars Using
1Department of Endodontics, Faculty of Dentistry, Aksaray University, Aksaray, Türkiye.
None:
This study aimed to assess the relationship between the root canal morphology of mandibular premolars (MPs) and the presence of distolingual roots (DLRs) in mandibular first molars (MFMs) in a Turkish population. Anatomical symmetry and the complexity of MPs' canal configurations were also analysed using cone-beam computed tomography (CBCT). CBCT images from 3000 individuals were examined, comprising 18 000 mandibular teeth (4 MPs and 2 MFMs per subject). Root canal types were classified according to Vertucci's system and evaluated based on sex, symmetry and the presence of DLRs. DLRs were detected in 41.23% of individuals and were significantly more frequent in females (p < 0.001). Complex canal configurations were found in 64.83% of MPs. A significant association was observed between DLR presence and increased canal complexity in MPs (p < 0.001). These findings indicate that the presence of DLRs is highly related to morphological variation in the premolar region.
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