Evidence map›Paper›PMID 37578527›Full record

ArticleSurgical and radiologic anatomy : SRA2023

Prevalence and characteristics of accessory mandibular canals in an eastern Chinese population by cone beam computed tomography.

Mengyao Yang, Jifeng Yang, Shuli Deng

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Article in Surgical and radiologic anatomy : SRA, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1 citing paper in PubMed.

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5 · Who and what money

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3 authors.

Mengyao Yang *Department of Conservative Dentistry and Endodontics, School of Stomatology, Stomatology Hospital, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China.
Jifeng Yang *The Third Affiliated Hospital of Zhejiang, Chinese Medical University, 219 Moganshan Road, Xihu District, Hangzhou City, 310005, Zhejiang Province, China.
Shuli DengDepartment of Conservative Dentistry and Endodontics, School of Stomatology, Stomatology Hospital, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China. dengshuli@zju.edu.cn.

Funding

Key Research and Development Program of Zhejiang 2022C03060
6 · The paper itself

Abstract

purposeThis retrospective study aimed to determine the prevalence and morphological characteristics of accessory mandibular canals (AMCs) in an eastern Chinese population to provide clinical guidance for reducing intraoperative and postoperative complications.

methodsCone beam computed tomography (CBCT) scans of 300 Chinese patients were used to identify AMCs according to a modification of Naitoh's classification. The length of the branch (L0) and the upper and lower angles between the branch and mandibular canal were measured on sagittal images. Additionally, the branches were divided into narrow or wide types by calculating the ratio of the branch diameter to the main canal diameter. The location of the bifurcation point was characterized by measuring its distance to the buccal wall of the mandible (L1), lingual wall of the mandible (L2) and alveolar ridge (L3).

resultsThe prevalence rate of AMCs was 40.7% (95% CI: 35.1-46.3), and the most common type was the retromolar canal, followed by the forward canal, dental canal, trifid mandibular canals (TMCs) or others, inferior canal and buccolingual canal. Twenty-one cases of multiple branches with unusual patterns were observed in the study. The average values of L0, L1, L2 and L3 were 15.05 ± 0.63 mm, 5.79 ± 0.14 mm, 4.40 ± 0.18 mm and 14.61 ± 0.31 mm, respectively. The mean upper angle and lower angle were 141.59° ± 2.44° and 50.64° ± 2.57°, respectively. Approximately 20.8% of the branches were defined as wide type, and no statistical significance was found between different types.

conclusionAMCs are not rare anatomic variations of the mandibular canal in the eastern Chinese population; thus, CBCT examination is highly recommended for precise evaluation before surgeries involving the mandibles.

Indexed as

Anatomic VariationMandibleMandibular CanalAdolescentAdultAgedChinaCone-Beam Computed TomographyEast Asian PeopleFemaleHumansMaleMiddle AgedPrevalenceRetrospective StudiesYoung AdultAccessory mandibular canalAnatomic variationCone beam computed tomographyMandibular canal

Identifiers

PMID37578527

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