Patient specific indibidual computational bio-mechanics of temporomandibular joint system and application to temporomandibular disorder examination

患者颞下颌关节系统个体计算生物力学及其在颞下颌疾病检查中的应用

• 批准号: 12680830
• 负责人: TANAKA Masao
• 金额: $ 2.43万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680830/
• 关键词: Biomechanics; Computational Mechanics; Individual modeling; Temporomandibular joint

1. The methodology for establishing patient-specific individual modeling was developed for temporomandibular joints based on magnetic resonance images available at medical examination, and a prototype modeling system has been demonstrated for the clinical dental researchers.2. The jaw bone movement was reconstructed interpolating the jaw bone position observed by magnetic resonance images at different mouth opening stages of individual subject. It gives us a rationale to determine the typical jaw movement condition used for the computational biomechanics analysis of temporomandibular joints.3. Stress analysis concerning on the soft tissue components of articular disc and surrounding connective tissue have showed that normal temporomandibular joints exhibited the high stress region at the anteromedial portion of the articular disc and that permanently anterior-disc-displaced temporomandibular joint resulted the relatively high stress in retrodiscal connective tissue in which tissue liga … More mentization was observed.4. Stress redistribution and tentative displacement in articular disc was very dependent not only on irregular spatial arrangement of components of anterior-disc-displaced temporomandibular joint but also on biomechanical property of articular disc and retrodiscal connective tissue. This fact suggested us the importance of biomechanical tests of retorodiscal connective tissue as well as articular disc.5. Indiyidual computational biomechanics analysis revealed that the tentative articular disc displacement in anterior direction due to the mouth opening was dependent on the elastic modulus of the articular disc in the case of normal temporomandibular joints, while the disc displacement was dependent on the elastic modulus of the retrodiscal tissue in the case of permanently anterior-disc-displaced joints. This feet showed the possibility to estimate the mechanical property of soft tissue components by comparing tentative disc displacement by image analysis and that by computational biomechanics analysis. Less

1.基于医学检查中的磁共振图像，开发了建立患者特定的颞下颌关节个体化建模的方法，并为临床牙科研究人员演示了一个原型建模系统.利用核磁共振图像观察到的个体不同张口阶段的颌骨位置，重建颌骨运动。这为确定颞下颌关节计算生物力学分析所需的典型颌骨运动条件提供了理论依据.对关节盘软组织成分及周围结缔组织的应力分析表明，正常颞下颌关节在关节盘的前内侧部分存在高应力区，而永久性前移位的颞下颌关节在盘后结缔组织中存在相对较高的应力，其中组织韧带与关节盘的前内侧部分相连。 ...更多信息 4.精神化被消除。关节盘的应力重分布和暂时性位移不仅与关节盘前移位的关节部件的不规则空间排列有关，而且与关节盘和盘后结缔组织的生物力学特性有关。这一事实提示我们椎间盘结缔组织以及关节盘的生物力学测试的重要性。计算生物力学分析表明，在正常颞下颌关节中，张口引起的关节盘前向位移取决于关节盘的弹性模量，而在永久性前向位移关节中，关节盘位移取决于盘后组织的弹性模量。通过比较影像分析和计算生物力学分析的椎间盘位移，显示了评估软组织成分力学性能的可能性。少

项目成果

M.TANAKA: "Stress analysis of anterior disc displaced temporomandibular joint with individual finite element modeling"Computer methods in biomechanics and biomedical engineering. (印刷中). (2002)

M.TANAKA：“通过个体有限元建模对前椎间盘移位的颞下颌关节进行应力分析”生物力学和生物医学工程中的计算机方法（2002 年出版）。

Masao Tanaka, Masahiro Todoh, Daisuke Asai and Eiji Tanaka: "Stress analysis of anterior disc displaced temporomandibular joint with individual finite element modeling"Computer methods in Biomechanics and Biomedical Engineering. (in press).

Masao Tanaka、Masahiro Todoh、Daisuke Asai 和 Eiji Tanaka：“采用个体有限元建模对前椎间盘移位颞下颌关节进行应力分析”生物力学和生物医学工程中的计算机方法。

M.Tanaka: "Stress analysis in the TMJ during jaw opening by use of a three-dimensional finite element model based on magnetic resonance images"International Journal of Oral and Maxillofacial Surgery. 30・5. 421-430 (2001)

M. Tanaka：“使用基于磁共振图像的三维有限元模型进行下颌张开时的颞下颌关节应力分析”，《国际口腔颌面外科杂志》30・5（2001 年）。

"Computational biomechanics consideration on biomechanical properties of soft tissue components and articular disc displacement in temporomandibular joint (in Japanese)"Preprint Japan Society of Mechanical Engineers. 014-1. 9/39-9-40 (2001)

“计算生物力学考虑软组织成分的生物力学特性和颞下颌关节的关节盘位移（日语）”预印本日本机械工程师学会。

M.TANAKA: "Finite element analysis of articular disc of temporo-mandibular joint based on individual modeling"Proc.12th Conf.European Society of Biomechanics. 178 (2000)

M.TANAKA：“基于个体建模的颞下颌关节关节盘的有限元分析”Proc.12th Conf.European Society of Biomechanics。