Prevalence of C-Shaped Canal Configuration in Mandibular Molars: A Retrospective Cone Beam Computed Tomography Study in a Group of Turkish Population

Abstract

Background: This retrospective study aimed to evaluate the prevalence of C-canal configurations in the mandibular first and second molars (SMs) within a Turkish population using cone beam computed tomography (CBCT), considering factors such as age and gender.

Methods: A total of 498 mandibular molars (MMs) from 200 individuals (102 males and 98 females, aged between 10 and 72) were examined using CBCT images. The molar teeth were assessed in axial slices, and the C-canal configuration was categorized into 5 distinct types. Statistical analysis was conducted using IBM SPSS (IBM Corp., Armonk, NY, ABD; 2013) Statistics 22, with significance set at P < .05.

Results: Of the 498 MM teeth studied, 149 (29.9%) exhibited C-canal configurations. No significant difference was observed in the distribution of C-canal types between the first and second MMs (P=.576, P > .05). Additionally, there was no significant variation in the incidence of
C-canals between the first and SMs across different age groups (P > .05).

Conclusion: C-shaped canal configurations are recognized anatomical variations in MMs, which can pose challenges during endodontic procedures. The use of CBCT imaging aids clinicians in identifying these variations and managing complex cases effectively.

Cite this article as: Ünal SY, Keser G, Namdar-Pekiner F. Prevalence of C-shaped canal configuration in mandibular molars: A retrospective cone beam computed tomography study in a group of Turkish population. Essent Dent. 2026, 5, 0041, doi:10.5152/EssentDent.2026.25041.