ArticleBMC oral health2025
Prevalence and morphology of middle mesial canals in mandibular first molars and their relationship with anatomical aspects of the mesial root: a CBCT analysis.
Article 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.
- Prevalence and morphometric assessment of the middle mesial canal in mandibular first molars in a turkish population: A CBCT study.Odontology · 2026Article
- Evaluation of the Prevalence and Morphology of Middle Mesial Canals in Bifid-Apex Mandibular Molars Using Micro-CT.Australian endodontic journal : the journal of the Australian Society of Endodontology Inc · 2026Article
- Association Between Middle Mesial Canals and Additional Distal Root Canal Anatomy in Mandibular First Molars: A Cone-Beam Computed Tomography Study in an Iranian Population.International journal of dentistry · 2026Article
- Variations in Root and Canal Morphology of Mandibular First Molars: A Retrospective Cone-Beam Computed Tomography Study in a Saudi Subpopulation.Journal of clinical medicine · 2025Article
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Authors and funding
5 authors.
Funding
Abstract
backgroundThis study aims to investigate the prevalence and morphology of middle mesial canal (MMC) in mandibular first molar (M1M) among a Northwestern Chinese population, and to analyze their relationship with anatomical aspects of the mesial root.
methodsCone beam computed tomography (CBCT) was utilized to evaluate 898 M1Ms and assess the incidence and morphology of MMC. The following parameters for M1M with or without MMC were obtained: the vertical distance between the first appearance of MMC and canal orifices (D), the distance between mesiobuccal (MB) and mesiolingual (ML) canals (D1), the buccolingual width(L1) and mesiodistal width (L2) of mesial roots, and the flatness degree(L1/L2) of mesial roots. The results were statistically analyzed.
resultsThe prevalence of MMC was 9.6% when considering the number of teeth and 7.2% when considering individuals. The presence of MMC was not significantly associated with sex (p = 0.993) or age (p = 0.211). Type 1-3-2 emerged as the most prevalent root canal morphology. MMC primarily manifested within 4 mm below the canal orifices. In cases where MMC was present, the MB-ML distance was significantly greater (p = 0.017). Conversely, no significant correlation was found between the presence of MMC and the length, width, or flatness degree of the mesial roots.
conclusionsThe morphology of MMCs is complex, and most of them exhibit confluent canals. In instances where MMCs are present, the MB-ML distance is significantly larger. For effective detection of MMC, a thorough examination of the area within 4 mm beneath the canal orifice is recommended.
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