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基于牙冠与牙根特征的牙齿建模方法

  

  1. 西安科技大学计算机科学与技术学院, 陕西 西安 710054
  • 出版日期:2017-08-31 发布日期:2017-08-10
  • 基金资助:
    中国博士后科学基金项目(2016M602941XB)；陕西省教育厅科研计划项目(16JK1497)；西安科技大学校级科研培育基金项目(201634)

Tooth Modeling Method Based on Tooth Crown and the Features of Tooth Root

  1. College of Computer Science and Technology, Xi’an University of Science and Technology, Xi’an Shaanxi 710054, China
  • Online:2017-08-31 Published:2017-08-10

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摘要： 三维扫描技术和基于CT 图像的三维重构是目前主流的牙齿建模方法。由于三维
扫描技术只能得到牙冠部分的三维数据模型，而被牙龈包裹的牙根数据却无法采集。利用CT
图像进行三维重构虽然可以得到完整的牙齿数据模型，但建模耗时长且成本高。针对上述建模
方法的不足，提出一种基于牙冠与牙根特征的牙齿建模方法。此方法基于牙体测量数据，建立
牙冠与牙根数据间的关联规则，根据Cardinal 样条插值和Tangent 权的Laplacian 网格变形算法
进行三维建模。最后将建模结果与原始数据对比，实验证明建模方法高效可行。

关键词: 牙根, 牙体测量, 三维建模, 样条曲线

Abstract: Three-dimensional (3D) scanning technology and 3D reconstruction based on CT images
are popular methods for tooth modeling recently. However, 3D scanning only can provides partial 3D
data of tooth crown, and the data of gingival root wrapped by the gum cannot be collected. Using CT
images for 3D reconstruction can get complete data model of tooth, but the process is time-consuming
and costly. In order to overcome the weakness of these methods above mentioned, a novel tooth
modeling method is proposed based on tooth crown and the features of tooth root. This method
establishes association rules for tooth crow and root based on the measured data of tooth, and 3D
model is constructed according to the Cardinal spline interpolation and Tangent weight - Laplacian
mesh editing. Compared the modeling results and original data, experimental results show that the
modeling method is efficient and feasible.

Key words: tooth root, tooth measurement, 3D modeling, spline curve