人类恒牙的计算机三维建模

目的牙体解剖学是口腔医学教育中一门主要的基础课程，对牙体形态的了解对于口腔内科、外科、正畸、修复等各专业都有重要的临床意义。方法本研究将取自一个颅骨标本的３２颗恒牙，通过包埋、磨切、摄影、扫描输入、模式识别等环节分解为单值二维数据，然后以计算机三维重建技术将二维数据组合成三维立体牙齿数学模型。结果在这个模型基础上利用计算机图象图形学技术实现真实感的三维牙齿模型。结论该数据牙模型为口腔医学计算机辅助教学提供了基本工具。

Three dimensional reconstruction of human permanent teeth

Objective Dental anatomy is one of the most important basic courses in the education of stomatology. The deep understanding of morphologic characters is closely instructive to the clinic of endodontics, oral surgery, orthodontics and prosthodontics. Methods In present study, 32 permanent teeth from a skull specimen were inputted into computer after the processes of burying, grinding, photographing, scanning and recognizing. By the techniques of reconstruction, the 3D stereo tooth models were retrieved from 2D digital data. Results On the basis of those 3D data, computer graphics techniques were used to realize the lighted, smoothed and shaded teeth. Conclusion Such a series of data teeth might be applicated as a corner stone of the computer aided instruction (CAI) in stomatology.