摘要
牙弓形状的检测对正畸诊断和治疗具有重要的意义。我们提出了一种患者个性化牙弓自动检测方法。首先利用三维测量设备对患牙的石膏模型采集并获取数字化模型;其次交互拾取四个特征点确定咬合平面;然后基于规则筛选出关键特征点集,通过两步最小二乘法拟合牙弓线。最后通过一组模型的检测试验,证实该方法是可行的、可靠的。
The shape of dental arch for orthodontic diagnosis and treatment is of great significance. This paper presents an automated method for detecting the dental arch form. Firstly, 3D teeth data model is retrieved by the 3D- optical measuring system. Secondly, the occlusal plane is computed by interactively picking up four feature points, Thirdly, the feature point set is filtered by the rule and two-step curve fitting method is used to obtain the dental arch form. Finally, some examples are tested in this work and the results demonstrate that the proposed algorithm is effective and feasible.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2009年第4期721-724,730,共5页
Journal of Biomedical Engineering
基金
江苏省科技攻关资助项目(BE2005014)
江苏省博士后科研资助项目(0701051B)
教育部博士点基金资助项目(20070287055)
江苏省数字化制造技术重点建设实验室开放课题资助(HGDML-0609)
关键词
三维测量
牙弓线
网格曲面
3-D measurement
Dental arch
Triangular mesh model
