Computation of tooth axes of existent and missing teeth from 3D CT images
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Yang Wang
Abstract
Orientations of tooth axes are important quantitative information used in dental diagnosis and surgery planning. However, their computation is a complex problem, and the existing methods have respective limitations. This paper proposes new methods to compute 3D tooth axes from 3D CT images for existent teeth with single root or multiple roots and to estimate 3D tooth axes from 3D CT images for missing teeth. The tooth axis of a single-root tooth will be determined by segmenting the pulp cavity of the tooth and computing the principal direction of the pulp cavity, and the estimation of tooth axes of the missing teeth is modeled as an interpolation problem of some quaternions along a 3D curve. The proposed methods can either avoid the difficult teeth segmentation problem or improve the limitations of existing methods. Their effectiveness and practicality are demonstrated by experimental results of different 3D CT images from the clinic.
Acknowledgments
This research was partly supported by the National 973 Program of China (grant no. 2013CB329401), the National Natural Science Foundation of China (grant no. 61375020), and the Cross Research Fund of Biomedical Engineering of Shanghai Jiaotong University (grant nos. YG2013ZD02 and YG2012MS19).
The authors thank the reviewers and the editor for their valuable comments and helpful suggestions that greatly improved the paper’s quality.
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©2015 by De Gruyter
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Articles in the same Issue
- Frontmatter
- Editorial
- Biomechanic models and image guided interventions
- Research articles
- Volume comparison of radiofrequency ablation at 3- and 5-cm target volumes for four different radiofrequency generators: MR volumetry in an open 1-T MRI system versus macroscopic measurement
- Interactive near-real-time high-resolution imaging for MR-guided lumbar interventions using ZOOM imaging in an open 1.0 Tesla MRI system – initial experience
- Measurement of susceptibility artifacts with histogram-based reference value on magnetic resonance images according to standard ASTM F2119
- FDG PET/CT dataset for navigation on femoral bone: a feasibility study
- An anthropomorphic sonography phantom for the evaluation of mechatronic devices for heart surgery
- Femoral cement extraction in revision total hip arthroplasty – an in vitro study comparing computer-assisted freehand-navigated cement removal to conventional cement extraction
- Review
- Isotropic incompressible hyperelastic models for modelling the mechanical behaviour of biological tissues: a review
- Research articles
- An experimental-nonlinear finite element study of a balloon expandable stent inside a realistic stenotic human coronary artery to investigate plaque and arterial wall injury
- An investigation on mechanical failure of hip joint using finite element method
- Residual stress analysis of fixed retainer wires after in vitro loading: can mastication-induced stresses produce an unfavorable effect?
- Computation of tooth axes of existent and missing teeth from 3D CT images
