A study of computer-aided-design (CAD) simulation for orthognathic surgery.

正颌手术计算机辅助设计 (CAD) 模拟的研究。本研究的目的是开发正颌手术程序的计算机辅助设计模拟器。该设备系统可以在普通临床实践中利用计算机图形技术提供视觉交流服务。过去两年获得的结果如下：（1）回顾性回顾了手术患者的数据，并将其链接到CAD模拟器作为手术模拟程序的数据集。（2）根据海报-前侧和侧位头影测量片创建了三维骨架形式。这种重建的面部骨骼图像可以帮助操作者轻松地从包含众多标志性小面的角度修改各种类型的截骨手术。（3）还通过使用多缝激光设备将硬组织、上升的常规头像和软组织相结合，开发了三维颌面部模型。通过应用交互式计算机图形技术，视觉三维颌面部图像可以用作手术模拟。（4）这种逼真的图形图像可用于手术计划和预测术后面部外观。

A study of computer-aided-design (CAD) simulation for orthognathic surgery.The purpose of this study is to develop a computer-aided-design simulator for orthognathic surgical procedures. This deviced system can afford a service of visual communication by using computer graphic techniques in ordinary clinical practice.The results obtained during the past two years are as follows :(1) The operated patients' data were reviewed retrospectively which were linked to CAD simurator as a data set (s) for surgical simulation programs.(2) A three dimensional skeleton form is created from the posters-anterior and lateral cephalogrammetric films. This reconstructed facial skeleton image can aid the operator easily to modify various types of osteotomy procedures from the containing numerous landmark facets.(3) A three dimensional maxillo-facial model is also developed by combining the hard tissue, rising conventional cephalograms and the soft tissue, using multislit laser apparatus.The visual three dimensional maxillo-facial image can be used as a surgical simulation by application of the interactive computer graphic techniques.(4) This realistic graphic images can be used for surgical planning and predicting the post-operative facial appearance.