中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (28): 4486-4492.doi: 10.3969/j.issn.2095-4344.2017.28.010

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

正颌手术对骨性下颌后缩颞下颌关节生物力学影响的三维有限元研究

田 涛1,王 为2,郑维银1,3,李 焰3,任凯歌1   

  1. 1西南医科大学,四川省泸州市 646000;2乌鲁木齐大为创新信息科技有限公司,新疆维吾尔自治区乌鲁木齐市 830001;3中国人民解放军成都军区总医院,四川省成都市 61000
  • 修回日期:2017-08-07 出版日期:2017-10-08 发布日期:2017-11-10
  • 通讯作者: 郑维银,副教授,硕士生导师,副主任医师,西南医科大学,四川省泸州市 646000;中国人民解放军成都军区总医院口腔科,四川省成都市 610000
  • 作者简介:田涛,男,四川省平武县人,西南医科大学在读硕士,主要从事口腔颌面外科方向的研究。
  • 基金资助:

    中国人民解放军成都军区总医院资助项目(15QNP034)

Three-dimensional finite element study on biomechanical effects of orthognathic surgery on the temporomandibular joint of skeletal mandibular retrusion

Tian Tao1, Wang Wei2, Zheng Wei-yin1, 3, Li Yan3, Ren Kai-ge1   

  1. 1Southwest Medical University, Luzhou 646000, Sichuan Province, China; 2Urumqi DW Innovation InfoTech Co., Ltd., Urumqi 830001, Xinjiang Uygur Autonomous Region, China; 3Chengdu Military General Hospital of Chinese PLA, Chengdu 610000, Sichuan Province, China
  • Revised:2017-08-07 Online:2017-10-08 Published:2017-11-10
  • Contact: Zheng Wei-yin, Associate professor, Master’s supervisor, Associate chief physician, Southwest Medical University, Luzhou 646000, Sichuan Province, China; Chengdu Military General Hospital of Chinese PLA, Chengdu 610000, Sichuan Province, China
  • About author:Tian Tao, Studying for master’s degree, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:

    the Project of Chengdu Military General Hospital of Chinese PLA, No. 15QNP034

摘要:

文章快速阅读:

文题释义:
颞下颌关节:
由上方的颞骨关节窝及关节结节、下方的髁突、居于两者之间的关节盘以及外侧包绕的关节囊和囊内外韧带等部分所构成。由复杂的几何形状、结构与各向异性的矩阵组成,各结构通过相互接触及关节盘的缓冲使应力分散和传递,与生理功能之间具有良好的适应性。其为颌面部惟一能动的关节,主要功能是承载咬合时咀嚼肌的收缩力,支持灵活多变的下颌运动。
生物力学:是研究生物与力学有关的问题,应用力学的原理和方法去研究医学、生理学和其他生物系统的问题。生物力学有助于了解器官的功能,由功能的变化来推知生理或病理变化的含义。主要运用工程学的方法、手段去研究生物的各种机制,以公式或定量计算去分析、论证有关生理现象的规律,使医学和生理学许多知其然而不知其所以然的现象得到合理的解释。

 

摘要
背景:
骨性下颌后缩一般需通过正颌手术治疗。下颌作为颞下颌关节受咀嚼力载荷的支点,使下颌正颌手术与颞下颌关节密切相关,但正颌手术对颞下颌关节的影响至今未形成统一结论。近年来有限元法在口腔医学的研究中得到了大量应用。
目的:建立骨性下颌后缩正颌手术前后颞下颌关节与下颌咀嚼肌系统的有限元模型,利用有限元法基本明确正颌手术对其颞下颌关节生物力学的远期影响。
方法:在三维重建软件中对骨性下颌后缩患者的CT平扫+三维重建数据模拟下颌支矢状劈开前徙术,前徙距离分别为4,8,10 mm。利用限元法获得正颌前后其髁突、颞下颌关节窝的Von Mises应力。
结果与结论:①成功建立了骨性下颌后缩正颌前后颞下颌关节与下颌咀嚼肌系统的有限元模型,获得了其髁突与颞下颌关节窝的应力云图及各区域的最大Von Mises应力值;②结果显示,综合运用Mimics、Geomagic Studio、Unigraphics NX、Workbench可建立具有较高相似性的骨性下颌后缩正颌前后颞下颌关节与下颌咀嚼肌系统的有限元模型;③从远期来看,规范的正颌手术一般不会对骨性下颌后缩患者的髁突与颞下颌关节窝产生不良影响。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID:
0000-0001-9035-7019(田涛)

关键词: 组织构建, 骨组织工程, 骨性下颌后缩, 正颌手术, 颞下颌关节, 有限元, ;Von Mises应力

Abstract:

BACKGROUND: Generally, orthognathic surgery is used for skeletal mandibular retrusion. As the fulcrum of the masticatory loads on the temporomandibular joint, the mandible connects orthognathic surgery on itself with temporomandibular joint closely. However, the influence of orthognathic surgery on temporomandibular joint has not yet been fully unified. Finite element method has been widely used in the research concerning stomatology in recent years.
OBJECTIVE: To establish a finite element model of temporomandibular joint and mandible with masticatory muscles before and after orthognathic surgery on the mandible and to investigate the long-term influence of orthognathic surgery on the biomechanics of temporomandibular joint.
METHODS: The data of CT scan and three-dimensional reconstruction of a patient with skeletal mandibular retrusion were used to simulate surgical mandibular advancement with sagittal split ramus osteotomy, and the distance of advancement was 4, 8 and 10 mm, respectively. The Von Mises stress of the condyles and articular fossae were obtained based on finite element method. 
RESULTS AND CONCLUSION: The finite element models of temporomandibular joint and mandible with masticatory muscles before and after orthognathic surgery of the patient with skeletal mandibular retrusion were established successfully, the stress nephograms and maximum Von Mises stress in each region of the condyles and articular fossae were obtained. To conclude, the finite element models are successfully established by Mimics, Geomagic Studio, Unigraphics NX and Workbench synthetically. The standard orthognathic surgery generally does not affect the condyle and glenoid fossa of the patient with skeletal mandibular retrusion negatively in the long-term.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Finite Element Analysis, Biomechanics, Tissue Engineering

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