下颌固定义齿的三维有限元模型的建立  

Construction of the three-dimensional finite element model of the mandibular FPD

作　　者：阎黎津[1] 刘洪臣[1] 白露[2] 王延荣[2] 

机构地区：[1]解放军总医院口腔科,主治医师北京100853 [2]北京航空航天大学405室,硕士研究生北京100083

出　　处：《口腔颌面修复学杂志》2002年第3期149-151,共3页Chinese Journal of Prosthodontics

基　　金：全军医药卫生科研基金课题(01MB081)

摘　　要：目的:建立正常下颌骨及后牙固定桥的三维有限元模型,为其生物力学的研究提供数学模型基础。方法:利用头面部螺旋CT扫描,数字影像传输与转录以及UG和MARC软件相结合的方法。结果:建成后的三维有限元模型与实体组织具有良好的几何相似性,共有单元4740个,节点5697个,模型可以根据需要任意进行旋转、缩放、透视、剖开等多种方式观察,还可以按照不同的研究目的和要求删除和添加材料或组织。结论:将CT扫描技术与有限元方法有机结合起来,建立的三维有限元模型能较真实地模拟实际情况,为口腔生物力学的研究与优化修复体设计提供了研究手段。Objective: To provide the model basis for the biomechanics researches of the fixed partial denture (FPD)by constructing tree-dimensional (3-D) finite element (FE) model of the mandibular FPD. Methods: The 3-D FE model ofthe mandibular FPD is constructed by means of SCT scanning technology, digital image transfer and transcription, UG andMARC engineering design program. Results: The constructed model has a good similarity to the morphology of the three-dimensional images. The total number of the nodes is 5697 and the number of the elements is 4740. The model can berotated arbitrarily and can be zoomed in or zoomed out. It can also be viewed in different fashions. By applying differentmaterial properties, boundary conditions and load cases to the model, the different load conditions of FPD can be simulated.Conclusion: The 3-D FE model combining the CT technology with FE model can simulate the oral prosthetics and structureactually, and provide a method for the researches of the oral biomechanics.

关 键 词：三维有限元模型 固定义齿 下颌骨 生物力学 CT扫描 

分 类 号：R783.6[医药卫生—口腔医学] R318.01[医药卫生—临床医学]