TMJ影像学三维重建与有限元应力分析浅述

Three-Dimensional Reconstruction and Finite Element Analysis in TMJ Imaging

摘要: 背景：颞下颌关节的结构及其动态生物力学复杂，通过影像学三维重建及有限元应力分析可帮助了解其动态结构和应力分布，为TMD的临床诊治提供新的思路。目的：总结TMJ影像学三维重建及有限元应力分析的研究现状及进展。方法：以“颞下颌关节，三维重建，有限元”“TMJ，3D reconstruction，finite element”为关键词，检索CNKI、万方数据库、PubMed、Web of Science数据库的相关文献。初检得到中英文文献56篇，筛选后对其中28篇文献进行分析和学习。结果与结论：在正常不同动态及多种病理情况下，TMJ的髁突、关节盘、关节窝在影像模型中如果出现不同的应力集中区域，预示易发生病变。基于CT和MRI的数字化联合，TMJ三维重建模型的发展，越来越精准和真实，能够完整地再现TMJ及其相关上下颌骨区域的解剖和动态功能性结构。

Abstract: Background: The structure and dynamic biomechanics of temporomandibular joint are complex. Three-dimensional reconstruction and finite element analysis can help us understand its dyna-micstructure and stress distribution, hence providing a new idea for clinical diagnosis and treatment of TMD. Objective: To summarize the research status and progress of three-dimensional reconstruction and finite element analysis for TMJ imaging. Methods: The words “temporomandibular joint, 3D reconstruction, finite element” in Chinese and the words “TMJ, 3D reconstruction, finite element” in English were used as keywords to search relevant literatures from CNKI, Wanfang database, PubMed and Web of Science. 56 articles were obtained in the preliminary examination, and 28 of them were adopted to be analyzed and studied after screening. Results and Conclusion: Under normally and differently dynamic or variously pathological conditions, once different concentrations of stress are shown in the condyle, articular disk or articular fossa of TMJ in the imaging model, it would indicate potential lesions as TMD. The development of TMJ 3d reconstruction model is becoming more and more accurate and true based on the combination of CT and MRI, facilitating a complete illustration for the anatomy and dynamic functional structure of TMJ and related maxillary and mandibular regions.