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Bone stress and strain modification in diastema closure: 3D analysis using finite element method.
Allahyar Geramy1, Joseph Bouserhal2, Domingo Martin3
1Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
International Orthodontics
|August 17, 2015
Summary
Diastema closure using constant force increases stress and strain in alveolar bone between central incisors. Tipping movements generate higher stress than bodily movements, suggesting force system modifications are needed.
Area of Science:
- Orthodontics
- Biomechanical Engineering
- Dental Implantology
Background:
- Diastema closure is a common orthodontic procedure.
- Understanding stress distribution in alveolar bone is crucial for treatment success.
- Finite element analysis (FEA) is a valuable tool for simulating biomechanical responses.
Purpose of the Study:
- To analyze stress and strain in alveolar bone during diastema closure.
- To compare stress distribution between tipping and bodily tooth movements.
- To provide insights for optimizing orthodontic force systems.
Main Methods:
- Developed a 3D finite element model of the anterior mandible.
- Included cortical bone, spongy bone, gingivae, and periodontal ligament (PDL).
- Simulated constant force application for diastema closure and evaluated von Mises stress and strain.
Main Results:
- Alveolar bone stress and strain increased with gradual diastema closure.
- Tipping movements resulted in significantly higher stress than bodily movements.
- Stress and strain patterns varied with the degree of space reduction.
Conclusions:
- Constant force during diastema closure alters alveolar bone stress and strain.
- Orthodontic protocols may require adjustments to manage stress during space closure.
- Further research into force system modifications can minimize unwanted stress alterations.
Keywords:
Bodily movementBone strainBone stressFinite element methodOrthodontic tooth movementTipping movementMore Related Videos
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