摘要
目的:利用ABAQUS软件,应用有限元方法对牙齿咬合进行仿真,并建立咬合接触关系的评测方法,以辅助医生制定正颌外科手术方案。方法:运用Mimics软件重建上下颌骨的三维几何模型,并在该模型的基础上对关节盘模型进行了简化,建立了上下颌骨的有限元模型,通过ABAQUS软件对咬合进行仿真计算。结果:通过对牙尖交错位进行咬合分析,得到牙齿表面上的应力分布云图,应用图像处理方法将应力区域分布转化成咬合点的形式,建立了用于评价咬合接触关系的评测方法。结论:该方法根据咬合点的情况判断手术后的咬合接触效果,可对正颌外科手术的术后咬合接触关系进行术前评测,并通过仿真结果辅助手术方案的完善,从而提高手术效果。
Objective： To establish a prospective evaluation method on occlusion contact based on ABAQUS software to help the surgeon make medical treatment program for orthognathic surgery.Methods： The three-dimensional model of the upper and lower jaw was reconstructed by the software of Mimics（a commercial software package for 3D image creation and editing）.The finite element model of occlusion including the simplified articular disc was established based on mechanical analysis and implemented by ABAQUS.Results： The stress contour areas of the teeth surface were obtained by the simulation of the intercuspal occlusion.After transforming the regional distribution of stress into the diagram of bite points,the evaluation method of occlusal contact was established.Conclusion： This method can be judged the preoperative effect of occlusal contacts according to the number of occlusion points,and help to evaluate the relation of occlusal contact of orthognathic surgery.
出处
《口腔颌面外科杂志》
CAS
2011年第3期172-175,共4页
Journal of Oral and Maxillofacial Surgery
关键词
咬合接触
有限元
咬合点
术前评测
正颌外科手术
occlusal contact
finite element method
occlusal points
preoperative evaluation
orthognathic surgery
