Morphologic Evaluation of the Prevalence of Radix Root and Mid-Mesial Canal in the Mandibular First Molars Using CBCT during 2016-2018 in Patients Referred to Mashhad Dental School
The purpose of this study was to evaluate the prevalence of radix root and mid-mesial (MM) canal in the mandibular first molars using cone-beam computed tomography (CBCT) in the Iranian population. Methods & Materials: In this descriptive cross-sectional study, a total of 100 CBCT scans were used which were taken in Mashhad Dental School, Iran, during 2016-2018. The prevalence of MM canal in mesial root and radix root in the mandibular first molars was evaluated according to the gender of the patients and tooth side. The data were analyzed using PASW Statistics software (version 18.0) and Chi-square test.
In this study, 57 right and 43 left first molars were evaluated. Based on the results, a total of four MM canals (4%) and two radix roots (2%) were observed. Three MM canals were observed in female patients and one was noticed in male patients. In addition, one radix root was observed in each gender. Two MM canals were observed on the right side and two MM canals on the left side. There was no statistically significant relationship between gender and side of the tooth with radix root and MM canal (P>0.05).
Although the frequency of MM canal and radix root in mandibular first molars was low in the studied population, the post-occurrence in these teeth should always be considered.
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