上颌中切牙内冠的计算机辅助设计与制造  

Computer aided design and manufacturing of coping crown on maxillary incisor

作　　者：安涛[1] 廖文和[1] 俞青[2] 戴宁[1] 焦益群[1] 

机构地区：[1]南京航空航天大学357信箱,江苏南京210016 [2]南京大学医学院附属口腔医院修复科,江苏南京210008

出　　处：《东南大学学报（医学版）》2006年第4期225-228,共4页Journal of Southeast University(Medical Science Edition)

基　　金：国家高技术研究发展计划(863计划)资助项目(2005AA420240);南京市医学科技发展计划项目(ZKX0420)

摘　　要：目的:对上颌中切牙内冠的计算机辅助设计与制造方法进行探讨和研究。方法:以右上中切牙为例,首先使用ATOSⅡ光学测量仪进行预备体表面数据采集;其次对所采集到的三角片数据进行处理,自动识别出颈缘线,重构预备体表面的曲面;然后利用生成的曲面分别针对无颈环内冠和半颈环内冠两种情况设计出所需内冠;最终利用3轴精雕机床进行数控铣削编程加工。结果:制作出的两种内冠均能够与预备体紧密贴合,整体设计精度均符合临床要求。结论:所选方法可行,具有临床实用价值,为进一步研究奠定了基础。Objective To study and discuss the computer aided design and manufacturing（CAD/CAM） of coping crown on maxillary incisor. Methods Taking the right maxillary incisor for example, firstly, ATOS Ⅱ 3D scanner was used to measure the 3D data of the abutment tooth which was used to design the coping crowns. Secondly, the collected trigonal faces were optimized based on their figures. The preparation line was automatically painted, and the surface was rebuilt by the software. Finally, the non collar coping crown and the half collar coping crown were designed based on the surface. The finished model was manufactured by 3-axis NC milling machine. Result The coping crowns fitted the abutment tooth very well, and the precision of the whole models were reasonably meeting the clinical demand. Conclusion The method is efficient, which provides basis for dental CAD/CAM system. It could be used in clinical application.

关 键 词：口腔修复 切牙 内冠 计算辅助设计与制造 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术] R783[自动化与计算机技术—计算机科学与技术]