Three-dimensional finite element modeling of the jaw and a stress analysis under dynamic loading(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2023年第5期
- Page:
- 647-652
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- Three-dimensional finite element modeling of the jaw and a stress analysis under dynamic loading
- Author(s):
- ZENG Shaoyu1; LI Shan1; YANG Xianghong2; ZHANG Shunguan1; TANG Kebin1
- 1. Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China 2. Department of Stomatology, Kunming Yanan Hospital, Kunming 650051, China
- Keywords:
- Keywords: mandible lower dentition periodontal ligament finite element analysis dynamic loading
- PACS:
- R318；R782.6
- DOI:
- DOI:10.3969/j.issn.1005-202X.2023.05.020
- Abstract:
- Abstract: Objective To explore and improve an efficient method for the three-dimensional finite element modeling of dentition, mandible and periodontal ligament using cone beam CT (CBCT) images, and analyze the stress distribution under dynamic loading. Methods The skull of a female with regular dentition, no missing teeth and healthy periodontium was scanned with CBCT. The lower dentition and mandible models which were extracted from the image were processed with defects repair and surface optimization and the periodontal ligament was modeled and assembled with each part to form a three-dimensional solid model. After material property definition, mesh generation, constraint setting and loading, the stress distributions of dentition and surrounding bone tissues under dynamic loading were analyzed. Results The three-dimensional finite element models of lower dentition, periodontal ligament and mandible were successfully constructed. Under dynamic loading, the peak value of equivalent stress (44.73 MPa) was located at the root of mandibular first molar. Stress concentration occurred at periodontal ligament and mandible under oblique loading. Conclusion A three-dimensional finite element model of human jaw can be established using CBCT and a variety of software, and it is suitable for the subsequent biomechanical research. Extracting models with different thresholds in Mimics software can make the results more accurate. Lowering the shear force by decreasing the inclination of buccal cusp can reduce the stress concentration.
Last Update: 2023-05-26