Wang Yu-guang, Lv Pei-jun, Wang Yong, Sun Yu-chun, Zhao Yi-jiao
Center of Computerized Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Beijing Da Xue Xue Bao Yi Xue Ban. 2010 Feb 18;42(1):108-10.
To study the method of automatic tooth selection for computer-aided design in complete denture, evaluate the results by comparison with traditional denture tooth selection.
3D data of occlusal rim made by the dentist were obtained with a 3D laser scanner and specific points on the occlusal rim were measured on Imageware11 platform. Based on Matlab 7.1 software platform, an automatic tooth selection software was programmed with adequate consideration of complete denture tooth selection factors, for example: face form of the patient, mesiodistal diameter of the artificial anterior teeth and posterior teeth, etc. Oclusal rim and edentulous models were selected from 20 patients. The artifical teeth were selected by both technician and software. The result of automatic tooth selection was evaluated by comparison with traditional method.
In 20 cases the concordant rate of automatic and traditional method is 70%.
The method of automatic tooth selection for computer-aided design in complete denture was realized in accordance with traditional method of denture tooth selection, the relationship between the curve of artificial teeth arranged on the occlusal rim and cuspid line--which was calculated accurately; automatic denture tooth selection; the denture tooth selected by software can be directly used in CAD complete denture tooth arrangement.
研究全口义齿计算机辅助设计中自动选牙的方法，并与传统义齿选牙方法进行比较以评估结果。
用3D激光扫描仪获取牙医制作的咬合堤的3D数据，并在Imageware11平台上测量咬合堤上的特定点。基于Matlab 7.1软件平台，充分考虑全口义齿选牙因素（如患者面部形态、人工前牙和后牙的近远中径等）编写自动选牙软件。从20例患者中选取咬合堤和无牙颌模型。人工牙分别由技师和软件进行选择。通过与传统方法比较评估自动选牙的结果。
20例中自动选牙与传统选牙方法的符合率为70%。
按照传统义齿选牙方法实现了全口义齿计算机辅助设计中的自动选牙，准确计算了排列在咬合堤上的人工牙曲线与尖牙线之间的关系；实现了自动义齿选牙；软件选择的义齿牙可直接用于CAD全口义齿排牙。
