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Volume 14 , Issue 4
July/August 2001

Pages 310315

Generation of 3-D Finite Element Models of Restored Human Teeth Using Micro-CT Techniques

Nico Verdonschot, PhD, Willem M. M. Fennis, DDS, Ruud H. Kuijs, DDS, Jan Stolk, MSc, Cees M. Kreulen, DDS, PhD, Nico H. J. Creugers, DDS, PhD

PMID: 11508084

Purpose: This article describes the development of a three-dimensional finite element model of a premolar based on a microscale computed tomographic (CT) data-acquisition technique. The development of the model is part of a project studying the optimal design and geometry of adhesive tooth-colored cusp-replacing restorations. Materials and Methods: The premolar was digitized with a micro CT scanner with a resolution of 13 m. Surface contours were fitted to the various materials, after which a 3-D finite element mesh was constructed to the contours. To demonstrate the potential use of the resulting model, it was applied to a cusp-replacing resin composite restoration. Results: The stress patterns generated in the composite material were truly 3-D. Stress concentrations were found at the surface where the load was applied and in the vicinity of the dentin-composite bonding surface, where the interface had its complex geometry. Conclusion: The described procedure is an easy method to produce a highly detailed 3-D finite element model of a premolar with an adhesive cusp-replacing restoration. Int J Prosthodont 2001;14:310315.

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