光栅变形条纹直接分析法用于牙冠形状的三维测量——正交验波法  

Three dimensional measurement of tooth crown with Fourier transform method of fringe pattern analysis

作　　者：高勃[1,2] 王忠义[1,2] 张少锋[1,2] 施长溪[1,2] 刘晓宁[1,2] 殷功杰[1,2] 刘波[1,2] 朱传贵[1,2] 

机构地区：[1]第四军医大学口腔医学院修复科 [2]中国科学院西安光学精密机械研究所

出　　处：《实用口腔医学杂志》1998年第2期125-127,共3页Journal of Practical Stomatology

摘　　要：目的：测量具有轴面代表性的中切牙唇面和具有咬合面代表性的磨牙牙合面，为牙冠三维面形重建及ＣＡＤ／ＣＡＭ的实现奠定基础。方法：采用变形光栅条纹直接分析法，研制了一台小型的牙冠三维表面轮廓测量仪，编制了支持软件，建立了一套自动“光学印模”系统。结果：获得了１唇面和｜６６｜牙合面的三维表面轮廓条纹图。结论：该方法采集图像速度快，测量装置小巧可靠，有置入口腔内实测的潜力。Objective: To obtain the three dimensional parameters of incisor labial surface and the molar occlusal surface for the purpose of reconstruction of the whole teech. Methods:A compact instrument for the measurement of 3 D shapes was designed and manufactured,and used to measure the incisor labial surface and the molar occlusal surfaces. Results:Three graphies about incisor labial surface and molar occlusal surfaces were obtained with the instrument.Conclusion:The algorithm employed to demodulate deformed grating pattern is a fast method. The instrument may be made small enough to put in mouth.

关 键 词：光栅投影 牙冠 形状 三维测量 

分 类 号：R78[医药卫生—口腔医学]