X线头颅定位片硬组织形态三维有限元分析模型的建立  

Establishment of a three dimentional finite element analysis model for hard tissue morphology on cephalometric X ray film

作　　者：田杰[1,2,3,4] 林珠[1,2,3,4] 陈彬 杭洽时[1,2,3,4] 龚宇 

机构地区：[1]第四军医大学口腔医学院 [2]大连解放军210医院 [3]第四军医大学医电系 [4]解放军第211医院口腔科

出　　处：《实用口腔医学杂志》1999年第2期135-136,共2页Journal of Practical Stomatology

摘　　要：目的：建立颅颌面硬组织形态三维有限元分析模型。方法：基于有限元分析和Ｂａｕｎｒｉｎｄ用头颅正、侧位定位片获取标志点三维坐标的原理，以硬组织标志点作为节点，按照解剖结构及结构间关系对硬组织进行单元划分。结果：选择头影测量硬组织标志点２３个作为节点，颅颌面硬组织划分成１３个四节点四面体单元，初步建立了一个颅颌面硬组织形态三维有限元分析模型。结论：该模型可用于颅颌面硬组织在三维方向上的形态特征及因生长、正畸矫治、正颌手术引起的形态变化研究。Objective:To establish a three dimensional finite element analysis model for hard tissue morphology.Methods:Based on the principle of finite element method and getting three dimensional coordinates from lateral and frontal cephalometric X ray films by Baunrind,the landmarks on cephalometric X ray films were selected as nodes,by which the hard tissue was divided into four noded and pyramidal elements according to anatomic structures and their relationship.Results:A primary three dimensional finite element analysis model for hard tissue morphology X ray films was established,on which 23 landmarks were selected as nodes,and the craniofacial hard tissue was divided into 13 tetrahedral elements.Conclusions:This model may be applied to study the three dimensional morphologic characteristics and changes induced by growth,orthodontic treatment and orthognathic operation.

关 键 词：头颅定位片 硬组织 X线头影测量 有限元法 

分 类 号：R816.1[医药卫生—放射医学] R816.98[医药卫生—临床医学]