Biomechanical evaluation of Chinese customized three-dimensionally printed total temporomandibular joint prostheses: A finite element analysis
| Autor: | Shanyong Zhang, Jinze Zhen, Haiyi Qin, Ya-ting Qiu, Zhihang Zhou, Jisi Zheng, Chen Xuzhuo, Yi Mao, Chi Yang, Yexin Wang |
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| Rok vydání: | 2018 |
| Předmět: |
Male
China Joint Prosthesis medicine.medical_treatment Finite Element Analysis Prosthesis Design Prosthesis Condyle Stress (mechanics) 03 medical and health sciences 0302 clinical medicine Osteoarthritis medicine Humans von Mises yield criterion Arthroplasty Replacement Orthodontics business.industry Mandible 030206 dentistry Temporomandibular Joint Disorders Finite element method Biomechanical Phenomena Masticatory force Temporomandibular joint medicine.anatomical_structure Otorhinolaryngology 030220 oncology & carcinogenesis Printing Three-Dimensional Computer-Aided Design Female Surgery Oral Surgery business |
| Zdroj: | Journal of Cranio-Maxillofacial Surgery. 46:1561-1568 |
| ISSN: | 1010-5182 |
| DOI: | 10.1016/j.jcms.2018.06.018 |
| Popis: | Purpose This work aims to evaluate the biomechanical behavior of Chinese customized three-dimensional (3D)−printing total temporomandibular joint (TMJ) prostheses by means of finite element analysis. Methods A 3D model was established by Mimics 18.0, then output in a stereolithography (STL) format. Two models were established to investigate the strain behaviors of an intact mandible and a one-side implanted mandible respectively. Hypermesh and LS-DYNA software were used to establish computer-aided engineering finite element models. The stress distribution on the custom-made total TMJ prosthesis and the strain distribution on the mandible were analyzed by loading maximal masticatory force. Results The maximum stress on the surface of the ultra-high−molecular weight polyethylene was 19.61 MPa. With respect to the mandibular component, the maximum stress in the mandibular component was located at the anterior and posterior surface of the condylar neck, reaching 170.01 MPa. The peak von Mises stress was observed on the topside screw of the mandible, which was found to be 236.08 MPa. For the intact model, it was observed that the strain distribution was basically symmetrical. For the model with the prosthesis, the curve of strain distribution was fundamentally consistent with that in the intact mandible, except for the last 24 mm along the control line. A prominent strain decrease between 41.4% and 58.3% was observed in this area. Conclusions Chinese customized 3D-printed total TMJ prostheses exhibit uniform stress distribution without changing the behavior of the opposite side natural joint. Furthermore, the prostheses have a great potential to be improved in design and materials with a promising future. |
| Databáze: | OpenAIRE |
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