Evaluation of Root Canal Morphology in the Mandibular First Premolars: A CBCT Study in An Iranian Population

Abstract Background: Mandibular premolars, because of high anatomic variations, are among the most difficult teeth for root canal treatment.The aim of this study is to compare and evaluate root canal morphology of mandibular first premolars between males and famales in an Iranian population applying CBCT imaging. Materials and Methods: In this analytical-cross sectional study, 230 CBCT imaging belonged to 115 males and 115 females were evaluated in this study. Images were assessed in the three spatial planes and the difference in the number of canals and roots were compared and reported statistically. Data were analyzed using SPSS 17 software and Chi-square test.The significance level was set as p