Evidence map›Paper›PMID 40841646›Full record

ArticleBMC oral health2025

Root and canal morphology of mandibular second molars in a Chinese Kazakh population by cone-beam computed tomography.

Shuchun Yang, Chenye Li, Hui Shi, Ming Liu, Xu Wang

Abstract read
In one paragraph

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 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Shuchun YangDepartment of Prosthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, 110002, China.
Chenye LiDepartment of Stomatology, Tacheng Hospital of China Medical University, Tacheng, Xinjiang Uygur Autonomous Region, 834700, China.
Hui ShiDepartment of Stomatology, Tacheng Hospital of China Medical University, Tacheng, Xinjiang Uygur Autonomous Region, 834700, China.
Ming LiuDepartment of Oral Radiology, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, 110002, China.
Xu WangDepartment of Prosthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, 110002, China. wangxu84@cmu.edu.cn.

Funding

Natural Science Foundation of Liaoning Province 2019-MS-01
6 · The paper itself

Abstract

objectiveThis study aimed to investigate variations in root and canal morphology of the mandibular second molars in a Chinese Kazakh population using cone-beam computed tomography (CBCT).

methodsA total of 374 mandibular second molars from 236 patients were included in the retrospective study. The mandibular second molars were categorized based on the radiographic morphology of their external roots: non-fused roots (NFR), fused roots (FR), and single roots with a single canal (SS). The configuration of the C-shaped canal at three different levels was categorized into C1-C5. A chi-square test was employed to assess the association between the incidence of C-shaped root canals and demographic factors such as sex and tooth position.

resultsMandibular second molars typically had two roots. C-shaped root canals appeared in 33.1% of second molars. The C-shaped form was most prominent in C3, followed by C1. Sex and tooth position did not exhibit notable differences.

conclusionsThe incidence of C-shaped root canals in the Chinese Kazakh population was similar to that previously reported in Asian populations and higher than in Caucasian and Middle Eastern populations.

Indexed as

Cone-Beam Computed TomographyDental Pulp CavityMolarTooth RootAdolescentAdultAgedAnatomic VariationCentral Asian PeopleChinaFemaleHumansMaleMandibleMiddle AgedRetrospective StudiesChinese kazakh populationCone-beam computed tomographyC-shaped root canalMandibular second molar root morphology

Identifiers

PMID40841646
PMCPMC12369240

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.