Prevalence of radix molaris in mandibular molars of a subpopulation of Brazil’s Northeast region: a cross-sectional CBCT study

Abstract

This study aimed to analyze the prevalence of radix molaris in a subpopulation of Brazil’s Northeast region using cone-beam computed tomography (CBCT). A total of 1092 CBCT exams and 3315 teeth (1541 first and 1774 s mandibular molars) were analyzed in axial, coronal, and sagittal planes using the PreXion 3D Viewer software. The teeth morphologies were analyzed and the occurrence of radix molaris, location, tooth, type (entomolaris and paramolaris) and patients’ gender were recorded. The data were expressed in the form of absolute and percentage frequencies and statistically analyzed using Pearson’s Chi-square test (P .05). It was observed that 92.96% of the teeth affected by the anatomical variation studied were classified as radix entomolaris. The bilateral prevalence of radix molaris was approximately 20.34% of the cases involving only first molars (P