摘要
目的:研究用于全口义齿计算机辅助设计(computer aided design,CAD)的自动选牙方法,将其与传统人工选牙方法比较,评价其选牙效果。方法:用三维激光扫描仪获取临床制取堤的三维数据,在Imageware11软件平台下对堤上特定标志点进行测量。基于Matlab 7.1软件平台,综合考虑总义齿选牙时需考虑的患者面型、人工牙龈径及近远中径、人工前牙列近远中径与口角线间弧长的关系等诸多选牙因素,编写选牙软件。选取20例临床患者的堤及无牙颌模型,对比采用软件选牙及技师选牙的结果,评价软件的选牙效果。结果:软件与人工方法选牙的一致率为70%。结论:选牙软件可以定量表达全口义齿人工牙的选牙规则,实现更加客观、自动化及标准化的选牙,扩充了全口义齿CAD/快速成形技术(RP)辅助制作系统人工牙数据库,增强了该系统的功能。
Objective：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.Methods： 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.Results： In 20 cases the concordant rate of automatic and traditional method is 70%.Conclusion： 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.
出处
《北京大学学报（医学版）》
CAS
CSCD
北大核心
2010年第1期108-110,共3页
Journal of Peking University:Health Sciences
基金
国家高技术研究发展计划专项经费(2006AA03Z446)
国家自然科学基金资助~~
关键词
义齿
全口
计算机辅助设计
Denture
complete
Computer-aided design
