基于立体光固化法制作隐形牙齿矫治器的技术研究

提出一种基于光固化法的隐形牙齿矫治器的制作技术.针对计算机断层扫描技术(Computer Tomography,CT)图片的特点,研究如何从CT图片中提取牙列层切面数据;提出一种基于元胞自动机原理的算法,实现对数据进行轮廓提取;利用空间相邻性排序算法,对轮廓数据进行排序;利用三次样条插值法,对数据进行插值.利用UG和Imageware进行矫治器的建模.利用立体光固化技术(Stereo Lithography Apparatus,SLA)进行模型加工的工艺实验,找到一组优化的加工工艺参数,成功地加工出矫治器模型样件.该模型反映了牙齿的形状,并具有一定的矫治功能.

Molding of the concealed teeth correcting equipment based on SLA

A technology of the concealed teeth correcting equipment is developed.In the view of the characteristic of the CT picture,studies how to withdraw the level section data from the teeth CT picture.According to the cellular automata principle,it proposes one algorithm which carrying on the function to withdraw the data of outline.Using the spatial neighboring sort algorithm,it carries on the arrangement to the outline data.With UG and Imageware,three-dimensional model of the teeth correcting equipment is constructed.Using thrice spline interpolations,it carries on the interpolation to the data.Using the Stereo Lithography Apparatus(SLA)technology,it carries on the teeth correcting equipment processing,finds a group of relatively appropriate processing craft parameters,processes the teeth socket model.This model reflects the form of the teeth,have certain correction functions.