Potential correlation between complicated root canal morphologies of mandibular central incisors and radix entomolaris in mandibular permanent first molars in a Turkish population: A cone beam computed tomography analysis

Objective: This study investigated the potential correlation between the presence of complicated canal configurations of mandibular central incisors (ManCIs) and the existence of radix entomolaris (RE) in the permanent mandibular first molars (ManFMs) in a Turkish population. Materials and Methods: The prevalence of complicated ManCI root canal configurations and the prevalence of RE in ManFMs were investigated using cone beam computed tomography images of 534 patients. The correlation between complicated root canal configurations and the presence of RE was evaluated using multivariable logistic regression analysis. Results: RE was observed in 18.6% (199/1068) of ManFMs, and 22.8% (244/1068) of ManCIs had complicated root canal configurations. There was a positive correlation between complicated ManCI root canal configurations and the presence of RE (p<0.001, r=0.248). Conclusion: Within the limitations of the current study, the presence of RE was associated with the existence of complicated ManCI root canal configurations in this Turkish population.