Bounding Box Modeling in Virtual Orthodontics Treatment System

  • Zhanli Li
  • Youlan Chen
Part of the Advances in Intelligent and Soft Computing book series (AINSC, volume 169)


The objective of this paper was establishing the bounding box applied on 3D dental models which reflected the characteristics of single-tooth shapes accurately. First, according to the Gaussian curvature of each tooth’s surface and the definition of feature points on single-tooth in oral medicine, the feature points are extracted. Second, based on the feature points, established a local coordinate system which reflect the direction of the inertia axis, mesi-distal and buccolingual. Finally, according to the maximum value of the local coordinate system, constructed a bounding box for each tooth adopted the Axis-Aligned Bounding Box (AABB) method. Based on the model and method, a software is developed by using Visual C++ and OpenGL for the bounding box establishment of single tooth. Experiments show, that method meet the requirements of oral medicine, more reliable and effective compared with traditional methods.


Bounding Box Gaussian Curvature feature point Orthodontics 


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Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  • Zhanli Li
    • 1
  • Youlan Chen
    • 1
  1. 1.College of Computer Science and TechnologyXi’an University of Science and TechnologyXi’anChina

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