Diagnostic Method of Maxillomandibular Relation of Edentulous Ridges. Application of the Three-dimensional Reconstruction Method.
Diagnostic Method of Maxillomandibular Relation of Edentulous Ridges. Application of the Three-dimensional Reconstruction Method.
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无牙颌颌骨关系的诊断方法。
DOI：
10.2186/jjps.39.995
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
E. Nagaoka
中科院分区：
文献类型：
--
作者：
N. Kawahata;H. Ono;A. Otsuka;T. Fukunaga;Yuji Kamashita;Y. Nishi;E. Nagaoka
上下颌关系的诊断对后牙人工牙的排列有重要意义。在这项研究中，开发了一种新的诊断方法。用非接触式形状测量系统测量了无牙颌模型和三个滚珠轴承的轮廓及其在咬合边缘上的印模。根据牙槽骨铸型的测量数据，用样条曲线插值，并结合咬合平面，计算出解剖牙槽嵴。在正断层上，计算咬合平面与牙槽嵴线之间的夹角，并将分析结果，包括上、下石膏模型的牙槽嵴顶和牙槽嵴线的解剖结构，以咬合、侧位和正视图的形式显示在计算机CRT上。结果表明，该方法对无牙颌模型的上下颌关系的诊断是有用的。
It is important to diagnose the maxillomandibular relation for the arrangement of artificial posterior teeth. In this study, a new method of diagnosis was developed. The contours of edentulous casts and three ball bearings and their impressions on the occlusion rims were measured by a noncontact type shape-measurement system. Using the measuring data of the casts which were interpolated by spline curves and the tentative plane of occlusion, anatomical alveolar crests were calculated. On frontal sections, the angle between the tentative plane of occlusion and the interalveolar ridge lines were calculated.The results of analysis, including anatomical alveolar crests of upper and lower casts and interalveolar ridge lines, were displayed on the CRT of a personal computer in occlusal, lateral and front views. As a result, it was suggested that this method was useful in the diagnosis of the maxillomandibular relation to edentulous casts.