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International Journal of Biomaterials
Volume 2010, Article ID 659802, 7 pages
Research Article

Development of 3D CAD/FEM Analysis System for Natural Teeth and Jaw Bone Constructed from X-Ray CT Images

1Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-Ku, Tokyo 102-8159, Japan
2Department of Prosthetic Dentistry and Biomaterials Science, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, 20520 Turku, Finland
3Department of Machanical Engineering, Tokyo University of Science, 1-14-6 Kudan-Kita, Chiyoda-Ku, Tokyo 102-0073, Japan

Received 8 December 2009; Revised 25 April 2010; Accepted 25 May 2010

Academic Editor: Aldo R. Boccaccini

Copyright © 2010 Aki Hasegawa et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A three-dimensional finite element model of the lower first premolar, with the three layers of enamel, dentin, and pulp, and the mandible, with the two layers of cortical and cancellous bones, was directly constructed from noninvasively acquired CT images. This model was used to develop a system to analyze the stresses on the teeth and supporting bone structure during occlusion based on the finite element method and to examine the possibility of mechanical simulation.