Evidence map›Paper›PMID 40405193›Full record

ArticleBMC oral health2025

Comparative evaluation of four traction scenarios on a labially impacted dilacerated maxillary central incisor: a three-dimensional finite element analysis.

Enas Senan Alyafrusee, Bowen Zheng, Wael Telha, Mengyao Li, Haopeng Wu, Xiaofeng Yang, Bushra Sufyan Almaqrami, Naseem Ali Al-Worafi, Majedh Abdo Ali Al-Somairi, Maged S Alhammadi and 1 more

Abstract readComparative Study
PubMed Full text at PMC Publisher
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. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Enas Senan AlyafruseeDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China.
Bowen ZhengDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China. bwzheng@cmu.edu.cn.
Wael TelhaDepartment of Oral and Maxillofacial Surgery, Faculty of Dentistry, Thamar University, Thamar, Yemen.
Mengyao LiDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China.
Haopeng WuDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China.
Xiaofeng YangDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China.
Bushra Sufyan AlmaqramiDepartment of Orthodontics, Ningbo Dental Hospital, Ningbo, Zhejiang, 315032, China.
Naseem Ali Al-WorafiDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China.
Majedh Abdo Ali Al-SomairiDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China.
Maged S AlhammadiOrthodontics and Dentofacial Orthopedics, Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia.
Yi LiuDepartment of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, Liaoning, 110002, China. liuyi@cmu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis study aimed to analyze the stress distribution in the dentoalveolar structures of a labially impacted dilacerated maxillary central incisor during orthodontic traction, considering different positions of the traction button on the tooth's crown through finite element analysis (FEA). MATERIALS AND

methodsFour three-dimensional (3D)finite element models (FEM) were created to simulate the maxilla of a 9-year-old female patient, featuring a left labially impacted dilacerated maxillary central incisor with the only variation being the position of the orthodontic traction button: at the incisal third of the labial surface (Model A), at the incisal third of the palatal surface (Model B), at the middle third of the palatal surface (Model C), and the cervical third of the palatal surface (Model D). Material parameters, grids, boundary conditions, coordinate systems, and load conditions were set in Ansys to establish the FEM for traction of the impacted incisor. A 100 g total traction force was applied between the button and a 0.016 × 0.022-inch stainless steel archwire in the direction perpendicular to the impacted tooth's crown. The initial tooth displacements, biomechanical stress at the root apex, alveolar bone von Mises stress, and hydrostatic stress of the periodontal ligament (PDL) under the four conditions were analyzed and compared.

resultsThe impact of traction button positioning on tooth displacement, stress distribution, and bone loading was assessed in four models. Model B demonstrated the highest labiopalatal and vertical displacement. The stress concentrations in the impacted tooth's root were highest in model B, particularly in the cervical region labially, while model D showed the lowest root stress. Maximum stress in the alveolar bone was also observed in models A and B, particularly on the palatal surface near the cervical region. Hydrostatic stress in the periodontal ligament was highest in model B and lowest in model D.

conclusionThe traction button positioned on the incisal third of the labial or palatal surface facilitates significant tooth movement. Still, it carries a higher risk of periodontal ligament damage, root and alveolar bone resorption. In contrast, the traction button positioned on the cervical third of the palatal surface, while less effective for movement, generates the least stress.

Indexed as

Dental Stress AnalysisFinite Element AnalysisImaging, Three-DimensionalIncisorOrthodontic ExtrusionTooth, ImpactedTooth Movement TechniquesAlveolar ProcessBiomechanical PhenomenaChildComputer SimulationFemaleHumansMaxillaOrthodontic WiresPeriodontal LigamentDilacerationHydrostatic stress of periodontal ligamentImpacted maxillary central incisorStress distributionThree-dimensional finite element analysis

Identifiers

PMID40405193
PMCPMC12096593

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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.