Evaluation of the Prevalence of C-Shaped Canals in Maxillary Molars by Cone Beam Computed ‎Tomography in Iranian Population

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Context:‎ Aims: This study was aimed to assess the prevalence of C-shaped root canals in maxillary molars ‎by analyzing cone-beam computed tomography (CBCT) in Iranian population.‎ Settings and Design:‎ Material and Methods:‎ In this descriptive cross-sectional study, 450 extracted maxillary molars were examined by ‎CBCT (NewTom FP QR-DVT 9000 Verona, Italy) radiography. The images were analyzed using ‎NewToms’ NNT software and examined by an oral and maxillofacial radiologist and an endodontist to ‎determine the absence or presence as well as classification of C-shaped canals. Statistical analysis ‎was done by SPSS version 21.0.‎ Results:‎ Of the 450 teeth studies, 24 (5.33%) had C-shaped canals and 426 (94.66%) had normal anatomy. ‎Moreover, the highest type, observed among the study population, was type B1 (Based on Martin ‎classification).‎ Conclusions:‎ The result of this investigation demonstrated that 5.3% of the Iranian population teeth have C-‎shaped morphology‎‎‎.