ArticleProgress in orthodontics2023
The displacement of teeth and stress distribution on periodontal ligament under different upper incisors proclination with clear aligner in cases of extraction: a finite element study.
Article in Progress in orthodontics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.
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Who cites it
16 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.
- [Advancements in biomechanics and orthodontic strategies for clear aligner therapy].Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2026Pooled it
- Predictability of maxillary canine retraction comparing power arm and non-power arm using 24 sets of In-house clear aligner in premolar extraction case: a randomized controlled trial.BMC oral health · 2025Trial
- Effect of power arm length and attachment configuration on maxillary molar mesialization with clear aligners: a finite element analysis.BMC oral health · 2026Article
- Effects of proactive or synchronous anchorage preparation of posterior teeth during anterior en masse retraction with clear aligners: a three-dimensional finite element study.Progress in orthodontics · 2026Article
- Biomechanical Applications of Finite Element Analysis in Orthodontics: A Scoping Review of Force Distribution, Tooth Movement, and Mechanical Performance.Dentistry journal · 2026Review
- Conservative orthodontic re-treatment management of severely proclined upper anterior teeth with root resorption.Journal of orthodontic science · 2026Article
- Multi-step finite element simulation for clear aligner space closure: a proof-of-concept compensation protocol.Scientific reports · 2025Article
- Effects of different corticotomy approaches on anterior retraction with clear aligners: a finite element study.BMC oral health · 2025Article
- An integrated approach to posterior anchorage preparation and incisor torque compensation in premolar extraction cases using clear aligners.BMC oral health · 2025Article
- Impact of Molar Distalization with Clear Aligners on Periodontal Ligament Stress and Root Resorption Risk: A Systematic Review of 3D Finite Element Analysis Studies.Dentistry journal · 2025Review
- Biomechanically Valid Clear Aligner Therapy for Premolar Extraction Case: A Case Report and Literature Review.Case reports in dentistry · 2025Article
- Impacts of surface wear of attachments on maxillary canine distalization with clear aligners: a three-dimensional finite element study.Frontiers in bioengineering and biotechnology · 2025Article
- Distalization of the mandibular first molar with clear aligners: a 3D finite element study.Frontiers in bioengineering and biotechnology · 2025Article
- Biomechanical effects of root/cortical bone relation on tooth movement during premolar-extraction space closure with clear aligners: a finite element study.Frontiers in bioengineering and biotechnology · 2025Article
- Validation of novel measurement protocols proposed for the standardized assessment of crestal bone levels: A cone-beam computed tomography study.Imaging science in dentistry · 2024Article
- Seeking orderness out of the orderless movements: an up-to-date review of the biomechanics in clear aligners.Progress in orthodontics · 2024Review
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
objectivesTo investigate the displacement of dentition and stress distribution on periodontal ligament (PDL) during retraction and intrusion of anterior teeth under different proclination of incisors using clear aligner (CA) in cases involving extraction of the first premolars.
methodsModels were constructed, consisting of the maxilla, PDLs, CA and maxillary dentition without first premolars. These models were then imported to finite element analysis (FEA) software. The incisor proclination determined the division of the models into three groups: Small torque (ST) with U1-SN = 100°, Middle torque (MT) with U1-SN = 110°, and High torque (HT) with U1-SN = 120°. Following space closure, a 200 g intrusion force was applied at angles of 60°, 70°, 80°, and 90° to the occlusal plane, respectively.
resultsCA therapy caused lingual tipping and extrusion of incisors, mesial tipping and intrusion of canines, and mesial tipping of posterior teeth in each group. As the proclination of incisors increased, the incisors presented more extrusion and minor retraction, and the teeth from the canine to the second molar displayed an increased tendency of intrusion. The peak Von Mises equivalent stress (VMES) value successively decreased from the central incisor to the canine and from the second premolar to the second molar, and the VMES of the second molar was the lowest among the three groups. When the angle between the intrusion force and occlusal plane got larger, the incisors exhibited greater intrusion but minor retraction.
conclusionsThe "roller coaster effect" usually occurred in cases involving premolar extraction with CA, especially in patients with protruded incisors. The force closer to the vertical direction were more effective in achieving incisor intrusion. The stress on PDLs mainly concentrated on the cervix and apex of incisors during the retraction process, indicating a possibility of root resorption.
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Registered trials
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.