Development of an orthodontic system on 3D digital models

• Main Authors: Akyla Chang, 張國忠
• Other Authors: 林清安
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/84642438174532828589

碩士 === 國立臺灣科技大學 === 機械工程系 === 93 === This thesis proposes an approach to improving the traditional procedure of making invisible tooth aligners. The technique of computer-aided design is also employed to simulate the alignment process of the entire orthodontic procedure. The goal is to replace the tedious, manual tooth-alignment operations on the dental model, so that a dentist can form an appropriate orthodontic treatment plan in the early stage of tooth-treatment. The computer-aided orthodontic system developed in this thesis includes the following steps: (1) load the scanned point-data of the dental model, (2) divide the entire tooth point-data into individual teeth, (3) for each tooth, manually label a line-segment which represents the geometry of the tooth, (4) find a dental arch based on the line-segments and related parameters, (5) align the line-segments to match the dental arch to achieve the tooth alignment function, and (6) use the dental model as the basis to conduct the making of a series of invisible tooth aligners. In addition to proposing the methodology of orthodontic treatment, this thesis uses Visual C++, MFC and OpenGL to develop a Windows-based orthodontic system that can be used in real-life dental practice. Dental experiments are also conducted and depicted in the thesis to verify the feasibility of the developed system.