一种基于数字化牙颌模型的三维咬合分析方法  

A method for three-dimensional analysis of occlusal contacts from digital dental casts

作　　者：赵一姣[1] 王勇[1] 吕培军[1] 

机构地区：[1]北京大学口腔医学院·口腔医院,卫生部口腔医学计算机应用工程技术研究中心,北京100081

出　　处：《北京大学学报（医学版）》2008年第1期109-111,共3页Journal of Peking University:Health Sciences

基　　金：国家高技术研究发展计划(2006AA03Z446)资助~~

摘　　要：目的:探索一种通过扫描带有空间位置关系的上、下颌模型,进行咬合接触三维分析的方法。方法:采用牙颌模型三维激光扫描仪及专用上、下颌模型定位装置,获取牙尖交错位空间位置关系的上、下颌模型三维点云数据,在逆向工程软件中重建咬合关系,进行三维咬合接触面积的测量,并与咬合纸、光学咬合分析的结论进行比较。结果:使用扫描重建的牙尖交错位状态模型测量出了三维咬合接触面积,与咬合纸、光学咬合分析的结果比较无显著区别,初步实现了"计算机虚拟咬合纸"的功能。结论:本研究的咬合分析方法准确性好,测量精度高,并有很好的发展潜力,为评价咬合接触状态提供了一种新的技术手段。Objective： The study was to investigate the occlusal contacts with a set of dental casts based on their three-dimensional models in the intercuspal position. Methods： 3D point-clouds of the dental casts in the intercuspal position were acquired by D. 02-L-3D scanner with a special casts-locating device, and reconstructed . The areas of occlusal contacts were calculated, and were further compared with the results from the methods of articulating paper and photocclusion technique. Results： There was no significant difference in the result of occlusal contacts analysis between the 3D reconstructive measurement and articulating paper or photocclusion technique. The virtual articulating paper was also preliminarily carried out in this research. Conclusion： The study verified the reliability of the measurement for occlusal contacts by the 3D digital model, and may lead to a new way for occlusal contacts research.

关 键 词：[牙合] 牙模型 三维 数字化 

分 类 号：R783.6[医药卫生—口腔医学]