Lu Y Q, Zhang S Y, Jian X C, Ren L F
Department of Stomatology, Xiangya Hospital, Central South University, Changsha 410078.
Hunan Yi Ke Da Xue Xue Bao. 2001 Feb 28;26(1):4-6.
This paper was to construct three-dimensional finite element model of rat molar, and to access mechanical stress distribution in the tooth and periodontia.
The first maxillary molar of adult rat was moved for 2 weeks with initial force of 40 g and 100 g. The histological specimen of tooth and surrounding structures were sectioned serially at 4 microns-thick slices in the coronary direction. The section's microscopic photographic images were made every 140 microns. The structural information of images was traced and fed into computer for three-dimensional reconstruction of the structure and finite element model.
The stress distribution in periodontia which lies between tooth and alveolar bone was very complicated.
The three-dimensional finite element model of rat molar is simple, precise, and effective for analyzing stress in tooth and periodontia.
构建大鼠磨牙的三维有限元模型，分析牙齿及牙周组织的力学应力分布。
对成年大鼠的上颌第一磨牙分别施加40 g和100 g的初始力移动2周。将牙齿及周围结构的组织学标本沿牙冠方向连续切成4微米厚的切片，每隔140微米制作切片的显微摄影图像。追踪图像的结构信息并输入计算机，进行结构的三维重建和有限元模型构建。
牙齿与牙槽骨之间的牙周组织应力分布非常复杂。
大鼠磨牙三维有限元模型简单、精确，对于分析牙齿及牙周组织应力有效。
