Effects of condylar elastic properties to temporomandibular joint stress.

Effects of condylar elastic properties to temporomandibular joint stress.
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髁突弹性特性对颞下颌关节应力的影响

DOI:
10.1155/2009/509848
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发表时间:
2009
影响因子:
--
通讯作者:
Wang Y
Wang Y
中科院分区:
其他
文献类型:
--
作者:
Zhang M;Ono T;Chen Y;Lv X;Wu S;Song H;Zhao R;Wang Y

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下颌突在颞下颌关节(TMJ)的生长和重建中起着重要作用。目的:利用连续波超声技术获得髁突的各向异性弹性参数,并用有限元分析方法观察其对TMJ应力分布的影响。利用超声技术获得了所有9个弹性参数,显示了下颌骨的正交异性。在定义为正交异性的情况下,咬合应力从下颌骨流畅而均匀地传递到TMJ。各向同性模型的应力分布在不同的解剖结构之间呈现阶梯式变化,软骨和髁突的应力值高于正交异性模型。我们得出的结论是,各向异性对TMJ的应力分布有细微而显著的影响,并可以改善模拟的真实性。
Mandibular condyle plays an important role in the growth and reconstruction of the temporomandibular joint (TMJ). We aimed to obtain orthotropic elastic parameters of the condyle using a continuous-wave ultrasonic technique and to observe the effects of condylar elastic parameters on stress distribution of the TMJ using finite element analysis (FEA). Using the ultrasonic technique, all nine elastic parameters were obtained, which showed that the mandibular condyle was orthotropic. With the condyle defined as orthotropic, the occlusal stress was transferred fluently and uniformly from the mandible to the TMJ. The stress distribution in the isotropic model showed stepped variation among different anatomical structures with higher stress values in the cartilage and condyle than in the orthotropic model. We conclude that anisotropy has subtle yet significant effects on stress distribution of the TMJ and could improve the reality of simulations.
DOI: 10.1016/0278-2391(94)90298-4
发表时间: 1994-03-01
影响因子: 1.9
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