ArticleBMC oral health2023
Root and canal morphology of mandibular second molars in an Egyptian subpopulation: a cone-beam computed tomography study.
Article in BMC oral health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.
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13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 15 citations in OpenAlex.
- Prevalence of c-shaped canal morphology in premolar and molar teeth assessed by cone-beam computed tomography: systematic review and meta-analysis.BMC oral health · 2025Pooled it
- A systematic review and meta-analysis of the prevalence and global distribution of middle mesial canals in mandibular molars identified by CBCT.Clinical oral investigations · 2024Pooled it
- Ex-vivo evaluation of clinically-set hydraulic sealers used with different canal dryness protocols and obturation techniques: a randomized clinical trial.Clinical oral investigations · 2024Trial
- C-Shaped Root Canal Morphology in Mandibular Posterior Teeth-A Retrospective CBCT Study Based on Two Classification Systems.Diagnostics (Basel, Switzerland) · 2026Article
- CBCT-Based Epidemiological Study of Root and Root Canal Anatomy in Mandibular Second Molars in an Italian Clinical Cohort.Journal of clinical medicine · 2026Article
- Preliminary in-vitro antibacterial evaluation of a novel formula of calcium phosphate nanoparticle-chlorhexidine intracanal medicament using confocal laser scanning microscopy.BMC oral health · 2026Article
- Bilateral Occurrence of Mandibular Permanent Second Molar With Four Roots: A Case Report and Literature Review.Case reports in dentistry · 2026Article
- Anatomical Variations in Permanent Mandibular Molars in the Sharjah Population: A Cohort Study Using Cone-Beam Computed Tomography.International journal of dentistry · 2026Article
- Anatomical complexity in mandibular second molars: prevalence of C-shaped canals, radicular grooves, taurodontism, and radices molarum in Saudi population.Scientific reports · 2025Article
- Article
- Evaluation of mandibular and maxillary second molar root canal anatomy in a Turkish subpopulation using CBCT: comparison of Briseno-Marroquin and Vertucci classifications.BMC medical imaging · 2025Article
- Morphological assessment of the isthmus in mesial root canals of first mandibular molars.Acta odontologica latinoamericana : AOL · 2023Article
- Comparative analysis between resin-based root canal sealer and recent bioceramic-based root canal sealers using MicroCT, film thickness, and solubility.Journal of oral biology and craniofacial researchArticle
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThis study was using Cone beam computed tomography (CBCT) to examine the anatomical variations in mandibular second molars in an Egyptian sub-population.
methodsA 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 < 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 < 0.05 within all tests.
resultsOf 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.
conclusionEgyptian sub-population shows highly variable morphological features in mandibular second molars, hence, CBCT is highly recommended on case-to-case conditions.
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