Root and canal morphology of mandibular second molars in an Egyptian subpopulation: a cone-beam computed tomography study

This study was using Cone beam computed tomography (CBCT) to examine the anatomical variations in mandibular second molars in an Egyptian sub-population. A total of 350 CBCT images (215 females and 135 males, aged 15-65 years) of mandibular second molars were evaluated. Samples were evaluated in ter...

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Published in:BMC oral health 2023-04, Vol.23 (1), p.217-217, Article 217
Main Authors: Saber, Shehabeldin Mohamed, Seoud, Mohammed Abou El, Sadat, Shaimaa Mohamed Abu El, Nawar, Nawar Naguib
Format: Article
Language:English
Subjects:
C-shaped canal
Computed tomography
Cone beam computed tomography
Cone-Beam Computed Tomography - methods
Dental Pulp Cavity - anatomy & histology
Dental Pulp Cavity - diagnostic imaging
Dental roots
Egypt
Endodontics
Female
Gender
Humans
Male
Mandible
Mandible - diagnostic imaging
Mandibular second molar
Molar - anatomy & histology
Molar - diagnostic imaging
Molars
Morphology
Reproducibility
Root canals
Software
Statistical analysis
Teeth
Tomography
Tooth Root - anatomy & histology
Tooth Root - diagnostic imaging
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creator Saber, Shehabeldin Mohamed
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Sadat, Shaimaa Mohamed Abu El
Nawar, Nawar Naguib
description This study was using Cone beam computed tomography (CBCT) to examine the anatomical variations in mandibular second molars in an Egyptian sub-population. A total of 350 CBCT images (215 females and 135 males, aged 15-65 years) of mandibular second molars were evaluated. Samples were evaluated in terms of: number of roots, number of root canals, roots' cross section as well as prevalence and configurations of C-shaped canals. Statistical analysis was done to highlight differences between different categories and their prevalence among genders (significance level was set at p 
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A total of 350 CBCT images (215 females and 135 males, aged 15-65 years) of mandibular second molars were evaluated. Samples were evaluated in terms of: number of roots, number of root canals, roots' cross section as well as prevalence and configurations of C-shaped canals. Statistical analysis was done to highlight differences between different categories and their prevalence among genders (significance level was set at p &lt; 0.05). Data were presented as frequency and percentage values and were analyzed using chi square test followed by pairwise comparisons utilizing multiple Fisher's exact tests with Bonferroni correction. The significance level was set at p &lt; 0.05 within all tests. Of the 350 mandibular second molars evaluated, 87.2% were non-C-shaped while 12.8% were C-shaped with no gender-based statistically significant differences (χ2 = 0.19, p = 0.656). Most samples had three root canals (80%) followed by two (16%), then one (3.2%), and finally four (0.8%) root canals. Among the non-C-shaped molars, presence of two roots was most common (83.4%) followed by presence of a single root (16.2%), and only one sample (0.2%) had three roots, and this had no correlation with gender (χ2 = 1.86, p = 0.431). In the mesial roots Type IV Vertucci was the most common configuration found (68.8%), while Type I was the most prevalent in the distal roots (91.8%). The long oval configuration was the most commonly found cross section in mesial roots while "oval" was the most prevalent in distal roots. 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subjects C-shaped canal
Computed tomography
Cone beam computed tomography
Cone-Beam Computed Tomography - methods
Dental Pulp Cavity - anatomy & histology
Dental Pulp Cavity - diagnostic imaging
Dental roots
Egypt
Endodontics
Female
Gender
Humans
Male
Mandible
Mandible - diagnostic imaging
Mandibular second molar
Molar - anatomy & histology
Molar - diagnostic imaging
Molars
Morphology
Reproducibility
Root canals
Software
Statistical analysis
Teeth
Tomography
Tooth Root - anatomy & histology
Tooth Root - diagnostic imaging
title Root and canal morphology of mandibular second molars in an Egyptian subpopulation: a cone-beam computed tomography study
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