Biomechanical study on repair materials of unilateral maxilla defect based on finite element model
- VernacularTitle:基于有限元的单侧上颌骨缺损修复材料的生物力学研究
- Author:
Li-xia BI
1
;
Jia-yi SUN
2
;
Yan-yi WANG
3
;
Li-zhen WANG
2
;
Yu-bo FAN
2
Author Information
1. Department of Stomatology, General Hospital of PLA;Department of Stomatology, the Second Artillary General Hospital
2. Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering
3. Department of Stomatology, General Hospital of PLA
- Publication Type:Journal Article
- Keywords:
Unilateral maxilla;
Finite element analysis;
Repair material;
Elastic modulus;
Stress
- From:
Journal of Medical Biomechanics
2014;29(1):E072-E077
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the biomechanical effect from different prosthetic materials used on unilateral maxillary defect repair by three dimensional finite element (FE) analysis method. Methods The maxillary unilateral defect model was reconstructed by medical image processing software MIMICS. The prosthesis was generated by mirroring technology. After processing, the FE unilateral maxillary defect model and healthy maxillary model were established to simulate stress distributions on the maxilla during occlusion. Results The maximum stress on maxilla using different repair materials was always found concentrated on the edge of maxilla connected with zygoma (the positions attaching zygolabialis and levator anguli oris). The minimum stress of from the maxilla edge on the repair side was 8.471 MPa by using tricalcium phosphate (TCP) composite. The maximum stress from the maxilla edge on the repair side was 17.55 MPa by using hydroxyapatite (HA) material. Conclusions Different repair materials had no significant effect on natural side of the maxilla after restoration, while a greater impact of force status on the repair side was found. The elastic modulus of different repair materials can be used as a basis for maxilla restoration in clinic.
