SynthesisBMC oral health2025
Prevalence of c-shaped canal morphology in premolar and molar teeth assessed by cone-beam computed tomography: systematic review and meta-analysis.
Synthesis in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- CBCT-Based Epidemiological Study of Root and Root Canal Anatomy in Mandibular Second Molars in an Italian Clinical Cohort.Journal of clinical medicine · 2026Article
- Root canal and nasopalatine canal morphology in a Guangxi population: a cone-beam CT study on regional variations.BMC oral health · 2026Article
- Assessing the diagnostic performance of MediXpar texture analysis for C-shaped canal morphology on panoramic radiographs: a pilot study.Clinical oral investigations · 2026Article
- A comprehensive analysis and sex-related differences in root and root canal anatomy in the Taiwanese population.Journal of dental sciences · 2026Article
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Authors and funding
3 authors.
Funding
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Abstract
purposeThis systematic review aimed to investigate the prevalence of c-shaped canal in mandibular and maxillary premolars and molars using cone-beam computed tomography (CBCT) and the effect of factors (e.g., gender, geographic region and position in the jaw) on the prevalence of this anomaly. MATERIALS AND
methodsA search was conducted in 3 databases (PubMed, Scopus and web of science) and studies were selected based on inclusion and exclusion criteria. The inclusion criteria were studies that investigated the prevalence of C-shaped canal using CBCT images until 2024. The I2 statistic was performed to determine heterogeneity and meta-analysis was conducted.
resultsOf 5548 studies, 101 studies were selected for meta-analysis based on inclusion criteria. The highest prevalence of c-shaped canal was in the mandibular second molar (17.3%) and the lowest prevalence was in the maxillary first molar (0.8%). The prevalence of c-shaped canal in the mandibular second molar was higher in women (Female: 23.6%, Male: 16.7%). C-shaped canal in the mandibular second molar was more common in Asian continent compared to other continents. The prevalence of C-shaped canals did not differ significantly in the mandibular second molar on the right and left sides (Right: 21.2%, Left: 23.1%).
conclusionBased on the results of this systematic review, the highest prevalence of c-shaped canal was in the mandibular second molar and it was more in Asian continent. Clinicians can consider the possibility of a C-shaped canal on the opposite side if they encounter the presence of a C-shaped canal during root canal therapy on one side. CBCT can be used to obtain sufficient information about the morphology of the root canal to improve the success of the root canal treatment.
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