人下颌骨及颞下颌关节不同受力模型的有限元分析

doi:10.3760/cma.j.issn.0376-2491.2013.38.012

CORC > 北京大学 > 工学院

	人下颌骨及颞下颌关节不同受力模型的有限元分析; Analysis of human mandible and temporomandibular joint using three-dimensional finite element method under different mechanical models
	徐娟 ; 郭超 ; 刘昌奎 ; 粱永强 ; 谭新颖 ; 荣起国 ; 胡敏
刊名	中华医学杂志
	2013
关键词	下颌骨颞下颌关节生物力学有限元分析边界条件 Mandible Temporomandibular joint Biomechanics Finite element analysis Boundary conditions
DOI	10.3760/cma.j.issn.0376-2491.2013.38.012
英文摘要	目的分析人下颌骨及颞下颌关节两种不同力学模型有限元模拟的结果.方法通过CT扫描建立包含密质骨、松质骨的完整人下颌骨三维模型,将所获得的三维模型在ICEM CFD软件中划分网格.在建立的网格模型基础上,对前牙咬合的下颌骨分别建立被动肌力加载和主动肌力加载两种生物力学模型,计算并比较其应力分布.结果两个模型中的应力分布有明显区别.被动肌力加载模型中,应力主要分布于下颌角、磨牙后三角、下颌切迹以及咬合点附近牙冠.主动肌力加载模型中,应力主要分布于髁状突顶点和颈部、下颌角、磨牙后三角以及咬合点附近牙冠.两者的应力分布有一定相似之处,但在髁状突处则有很大不同,这是由于两种模型下髁状突顶点反力的大小悬殊.结论主动肌力加载模型更接近下颌骨及颞下颌关节的实际受力状态,主动肌力加载模型为前牙咬合下颌骨的合理生物力学模型.; Analysis the result of human mandible and temporomandibular joint using two different three-dimensional finite element method under different mechanical models.The 3-dimensional model including cortical and cancellous bone for human mandible was obtained through computed tomography (CT) scan. Then the model was meshed in the software ICEM CFD. The passive and active muscle-force loadings were separately applied on the FE model to simulate the anterior clenching. Stress distributions in two models were compared.The stress distributions of two models were apparently different. In the passive muscle-force model, high stress was mainly distributed in mandibular angle, retromolar trigone, notch and bite point on crown. In the active muscle-force model, high stress was mainly distributed in condylar vertex and neck, mandibular angle, retromolar trigone and bite point on crown. There were some similarities between passive and active muscle loadings. However, large difference existed in condylar region due to the vertices reaction force disparity.Closer to actual stressing state of human mandible and temporomandibular joint, the active muscle-force model is a proper biomechanical model for human mandible under anterior clenching.; 北京市自然科学基金; 第52批中国博士后科学基金; PubMed; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 0; 38; 3054-3056; 93
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/189625]
专题	工学院
推荐引用方式 GB/T 7714	徐娟,郭超,刘昌奎,等. 人下颌骨及颞下颌关节不同受力模型的有限元分析, Analysis of human mandible and temporomandibular joint using three-dimensional finite element method under different mechanical models[J]. 中华医学杂志,2013.
APA	徐娟.,郭超.,刘昌奎.,粱永强.,谭新颖.,...&胡敏.(2013).人下颌骨及颞下颌关节不同受力模型的有限元分析.中华医学杂志.
MLA	徐娟,et al."人下颌骨及颞下颌关节不同受力模型的有限元分析".中华医学杂志 (2013).