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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 of craniofacial hard tissue morphology. Methods: Based on the principle of finite element analysis and Baunrind cranial and lateral positioning films, three-dimensional coordinates were acquired. The hard tissue markers were used as nodes, and the hard tissues were divided according to anatomy and structure. RESULTS: Twenty-three hard-tissue marker points were selected as cephalograms and craniofacies and hard-surface tissues were divided into 13 four-node tetrahedron elements. A three-dimensional finite element model of craniofacial and hard tissue morphology was initially established. Conclusion: This model can be used for the morphological features of craniomaxillofacial hard tissue in three-dimensional directions and morphological changes due to growth, orthodontic treatment and orthognathic surgery.