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Proceedings Paper

Effect of masticatory load on crack deflection/penetration investigated with en-face optical coherence tomography in ceramic fixed partial dentures
Author(s): Cosmin Sinescu; Meda Lavinia Negrutiu; Liviu Marsavina; Radu Negru; Mihai Hluscu; Cristiana Caplescu; Adrian Bradu; Michael Hughes; Mihai Rominu; Adrian Gh. Podoleanu
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Paper Abstract

Optical Coherence Tomography (OCT) allows a better characterization of dental prostheses. The detection of substance defects within the ceramic layers for metal-ceramic prostheses was demonstrated. The detected defects have a large volume and therefore there is a high likelihood for fracture lines to be generated in the proximal areas of the ceramic fixed partial dentures. If the detection of such defects is feasible before inserting the prosthesis into the oral cavity, then timely corrective measures are possible in order to avoid the fracture of the ceramic component later on. After noninvasive localization of cracks in ceramic fixed partial dentures, the effect of the biaxial loading on crack deflection/penetration at the ceramic interface was investigated. A biaxial loaded geometry was numerically investigated using Finite Element Analysis in order to determine the energy release rate. The obtained results could be used in conjunction with criteria at interface for estimating the path of the crack after the interface was reached.

Paper Details

Date Published: 13 March 2009
PDF: 9 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72584K (13 March 2009); doi: 10.1117/12.813637
Show Author Affiliations
Cosmin Sinescu, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Meda Lavinia Negrutiu, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Liviu Marsavina, Politehnica Univ. Timisoara (Romania)
Radu Negru, Politehnica Univ. Timisoara (Romania)
Mihai Hluscu, Politehnica Univ. Timisoara (Romania)
Cristiana Caplescu, Politehnica Univ. Timisoara (Romania)
Adrian Bradu, Univ. of Kent (United Kingdom)
Michael Hughes, Univ. of Kent (United Kingdom)
Mihai Rominu, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Adrian Gh. Podoleanu, Univ. of Kent (United Kingdom)

Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

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