ArticleBMC medical imaging2022
Evaluation of C-shaped canals in maxillary molars in a Chinese population using CBCT.
Article in BMC medical imaging, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 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
- Endodontic Management of a C-Shaped Maxillary Second Molar With Five Canals: A Case Report.Case reports in dentistry · 2026Article
- Evaluation of root and canal morphology of mandibular molar teeth by cone beam computed tomography: cross-sectional study.BMC oral health · 2025Article
- Nonsurgical endodontic retreatment of C-shaped maxillary molars: case reports and review of literature.BMC oral health · 2024Review
- Prevalence and Classification of C-Shaped Canal and Radix in Mandibular Molars Using Cone-Beam Computed Tomography on Mexican Population.Dentistry journal · 2024Article
- [Root canal therapy of maxillary molars with atypical canals: A report of three cases].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2024Article
- Nonsurgical endodontic treatment of a C-shaped, calcified maxillary first molar with five canals and a single fused root.Journal of dental sciences · 2024Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThe aim of this study was to evaluate the prevalence and characteristics of C-shaped root canals in maxillary first (MFMs) and second (MSMs) molars in a Southwestern Chinese population using cone-beam computed tomographic (CBCT).
methodsCBCT images of MFMs (n = 1488) and MSMs (n = 1547) from 1508 subjects enrolled in Guiyang Hospital of Stomatology between July 2018 to February 2021 were evaluated for the incidence and types of C-shaped root canals. Differences by age, sex, left or right side, and bilateral symmetry were also evaluated.
resultsC-shaped root canals were present in 2.93% MFMs and MSMs (n = 3035) in the Southwestern Chinese population. A significant higher incidence was observed in the MSMs (5.24%) than in the MFMs (0.54%). Increased incidences were noted in teeth with fused root. Two major types and 5 subtypes of C-shaped canal system of maxillary molars were defined, and the most common type of C-shaped canals is fusion of mesial-buccal (MB) and distal-buccal (DB) canals (Type I subtype C). No significant gender and age differences were noted in the prevalence of C-shaped root canals in this population, and no significant difference was seen in its incidence in the left or right MFMs and MSMs. The bilateral occurrence was observed in 1.27% of the patients.
conclusionC-shaped root canals are more frequently present in MSMs than in MFMs in the Southwestern Chinese population, with Type I subtype C (MB-DB canal fusion) as the most common subtype and low incidence of bilateral symmetry.
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