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Updated: Jun 25, 2026
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A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
Published on: April 8, 2020
Mechanical responses to orthodontic loading: a 3-dimensional finite element multi-tooth model.
Clarice Field1, Ionut Ichim, Michael V Swain
1School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, Australia.
Summary
Orthodontic loading causes significant stress and strain in teeth, particularly in multi-tooth systems. These stresses, especially compressive ones, may lead to root resorption during orthodontic tooth movement.
Area of Science:
- Biomechanical analysis of dental structures
- Orthodontic mechanics and tissue response
Background:
- The initial biological reactions to orthodontic loading are not fully understood.
- Understanding these responses is crucial for effective orthodontic therapy.
Purpose of the Study:
- To investigate the stress-strain responses of teeth under orthodontic loading using 3D finite element analysis.
- To analyze differences in mechanical responses between single-tooth and multi-tooth systems.
Main Methods:
- Developed a 3D finite element model from computed tomography data.
- Incorporated orthodontic hardware, boundary conditions, and tissue characteristics.
- Analyzed single-tooth (mandibular canine) and multi-tooth (incisor, canine, premolar) systems subjected to tipping forces.
Main Results:
- Elevated distortion strain energies were observed in the alveolar crest.
- Tensile and compressive stresses at apical sites correlated with root resorption.
- Stress levels were significantly higher in the multi-tooth system compared to the single-tooth system.
Conclusions:
- Orthodontic tooth movement generates distinct stress fields.
- Hydrostatic compressive stress may induce tissue necrosis, potentially causing root resorption.
- Findings highlight the importance of considering multi-tooth interactions in orthodontic treatment planning.
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