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ORIGINAL RESEARCH article
Front. Dent. Med
Sec. Reconstructive Dentistry
Volume 5 - 2024 |
doi: 10.3389/fdmed.2024.1461909
This article is part of the Research Topic Bioengineering and Oral Health: From Finite Element Analysis to Complete Oral Rehabilitations View all articles
Finite Element Analysis of Dental Structures: The Role of Mandibular Kinematics and Model Complexity
Provisionally accepted- 1 Materials and Mechanical Engineering Laboratory (MATIM), Departement of restorative dentistry and endodontics, School of dentistry, University of Reims Champagne-Ardenne, University Hospital Center, Reims, Champagne-Ardenne, France
- 2 Materials and Mechanical Engineering Laboratory (MATIM), University of Reims Champagne-Ardenne, Reims, France
- 3 Division of Dental Biomaterials, Clinic of Reconstructive Dentistry, Center of Dental Medicine, Faculty of Medicine, University of Zurich, Zurich, Zürich, Switzerland
This study observed the consequences of integrating mandibular kinematics in maxillary and mandibular teeth contact in a finite element analysis (FEA), and investigate the level of simplification of the dental models in FEA. The purpose of this study was to compare the results of finite element analysis obtained from simple to more complex dental models incorporating mandibular motion during loading phase. Six models were generated for this study. The simplest models consisted of only the crown of the tooth and an antagonist tooth with either the same properties or rigid body properties while the subsequent models incorporated the root of the study tooth and the surrounding bone. The most complex model involved the hyperelastic ligament and the other anatomical elements of the tooth and surrounding bone. Mandibular movement data recorded with the Modjaw® system (Modjaw-Technologie) were used to bring the teeth into contact and generate the loading in all models where the stresses exerted on tooth structures during the chewing process were evaluated. von Mises stress and the shear stress obtained in all models, exceeded the ultimate compression strength of the materials, except for the model with the hyperelastic periodontal ligament. The forces applied to the tooth were extremely different depending on the addition or removal of anatomical elements despite the systematic study of the same teeth. The inclusion of mandibular kinematics in the finite element analysis requires the modelling of a complex dental model as simplification generated an overestimation of the forces and stresses on the structures. Finite element dental models allow for the observation and prevention of restorative failures by numerical methods but misinterpretations caused by poorly designed models have clinical implications on estimating performance of dental restorations.
Keywords: Finite Element, models, dental, motion capture, Jaw Relation Record, Periodontal Ligament
Received: 09 Jul 2024; Accepted: 29 Aug 2024.
Copyright: © 2024 ÖZCAN, Lestriez, Özcan and Josset. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
CANAN ÖZCAN, Materials and Mechanical Engineering Laboratory (MATIM), Departement of restorative dentistry and endodontics, School of dentistry, University of Reims Champagne-Ardenne, University Hospital Center, Reims, Champagne-Ardenne, France
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