Evaluation of Root Canal Morphology in Mandibular Premolars in an Iraqi Subpopulation Using Cone-beam Computed Tomography (Retrospective study)

Volume 11 , Issue 2 , August 2024 , Pages 18-26

Authors

Dlsoz O. Babarasul 1 ; Ranjdar M. Talabani 1 ; Kazhan O. Abdalrahman 1 ; Shawbo M. Ahmad 1

1 Department of Conservative Dentistry, College of Dentistry, University of Sulaimani, Sulaimani, Iraq.

DOI logo 10.17656/sdj.10189

Keywords

Abstract

Objective: The effectiveness of root canal therapy relies on a thorough study of root canal anatomy, with mandibular premolars exhibiting a notable degree of diversity in this regard. The objective of this research was to utilize cone-beam computed tomography in order to determine the prevalence of mandibular premolar root canal configuration within a specific subpopulation in Iraq.
Methods: Using cone-beam computed tomography scans, 404 mandibular premolars from 101 patients were evaluated retrospectively. The Vertucci classification and its subsequent modifications were employed to document and categorize the morphology of root canals and examine its relationship with gender, age of the patients, and unilateral/bilateral symmetry. The statistical analysis was performed using the Chi-square test or Fisher exact test, with a predetermined significance level of 5% (p≤0.05).
Results: Around half (45%) of the first premolar teeth were of type I, 22.8% were of type V, 11.4% were of type III, and 10.4% were of type IX. No significant difference was detected between males and females regarding the types of canal configuration in mandibular first premolar teeth. Meanwhile, more than half (53%) of the second premolar teeth were of type I, 16.3% were of type V, 12.9% were of type III, and 10.4% were of type IX, the difference being significant between males and females. The differences in the distribution
of types of canal configuration in both first and second premolars among the age groups were significant, however no statistically significant difference was observed between the right and left. Type I was the predominant root canal configuration in permanent mandibular premolars.
Conclusions: Mandibular premolars had the greatest prevalence of type I root canal configurations, and there was a notable discrepancy in the number of canals between the MFP and MSP teeth in relation to age.

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