Effect of clenching on biomechanical response of human mandible and temporomandibular joint to traumatic force analyzed by finite element method.
Effect of clenching on biomechanical response of human mandible and temporomandibular joint to traumatic force analyzed by finite element method.
复制标题
DOI：
10.4317/medoral.18488
复制
发表时间：
2013-05-01
期刊：
影响因子：
--
通讯作者：
Kirita T
中科院分区：
文献类型：
--
作者：
Murakami K;Yamamoto K;Sugiura T;Kawakami M;Kang YB;Tsutsumi S;Kirita T
目的：用有限元方法分析咬合对人下颌骨和颞下颌关节(TMJ)创伤后生物力学响应的影响。材料和方法：制作下颌骨和TMJ静息和咬合的有限元模型。在下颌骨联合、尖牙、体部和角部施加力作为点载荷，分析了von Mise应力的分布和大小。此外，对关节盘处和后结缔组织的应变能密度(SED)进行了分析。结果：在静止位，von Mise应力主要集中在下颌骨的髁颈和磨牙后区域。在咬合位置，所有载荷下的髁状突颈应力均减小。在联合加载、尖牙加载和身体加载时，磨牙后区的应力分别降低，但在角加载时，加载侧磨牙后区的应力较大。静息状态下，关节盘处和后结缔组织产生高SED。这些组织中的SED在咬合位置的所有载荷下都降低。结论：咬合一般能降低下颌骨创伤对下颌骨的创伤作用，降低下颌骨髁颈和磨牙后区的应力，降低关节盘和后结缔组织的应变能，但咬合对角区的创伤性作用在加载侧磨牙后区产生较大的应力。关键词：下颌；颞下颌关节；创伤性；咬合；有限元分析。
Purpose: The purpose of the present study was to analyze the effect of clenching on the biomechanical response of human mandible and temporomandibular joint (TMJ) to traumatic force by the finite element (FE) method. Material and Methods: FE models of the mandible and the TMJ in resting and clenching positions were prepared. Distribution and magnitude of von Mises stress were analyzed by applying force as a point load in the symphyseal, canine, body and angle regions of the mandible. In addition, strain energy density (SED) at the articular disc and in posterior connective tissue of TMJ was analyzed. Results: In the resting position, von Mises stress was mainly concentrated at the condylar neck and in the retromolar region of the mandible. In the clenching position, the stress at the condylar neck decreased in all loadings. The stress in the retromolar region similary decreased in the symphyseal, canine and body loading, respectively; however, higher stress was observed in the retromolar region on the loading side in the angle loading. High SED was generated at the articular disc and in posterior connective tissues of TMJ in the resting position. The SED in these tissues decreased in all loadings in the clenching position. Conclusions: Clenching generally reduces stress at the condylar neck and in the retromolar region of the mandible, and strain energy at the articular disc and in posterior connective tissue of TMJ by traumatic forces on the mandible; however, clenching induces greater stress in the retromolar region on the loading side by traumatic force to the angle region. Key words:Mandibular, temporomandibular joint, traumatic force, clenching, finite element analysis.
登录
查看更多内容
DOI：
10.1016/j.ijom.2005.01.008
发表时间：
2005-09-01
影响因子：
2.4
作者：
Mourouzis, C;Koumoura, F
通讯作者：
Koumoura, F
影响因子：
4.2
作者：
Yaman, SD;Alacam, T;Yaman, Y
通讯作者：
Yaman, Y
影响因子：
2.4
作者：
HART, RT;HENNEBEL, VV;ANDERSON, RC
通讯作者：
ANDERSON, RC
影响因子：
2.5
作者：
King, RE;Scianna, JM;Petruzzelli, GJ
通讯作者：
Petruzzelli, GJ
影响因子：
2.9
作者：
Maeda, Y;Sogo, M;Tsutsumi, S
通讯作者：
Tsutsumi, S