Effect of masticatory load on crack deflection/penetration investigated with en-face optical coherence tomography in ceramic fixed partial dentures

Cosmin Sinescu; Meda Lavinia Negrutiu; Liviu Marsavina; Radu Negru; Mihai Hluscu; Cristiana Caplescu; Adrian Bradu; Michael Hughes; Mihai Rominu; Adrian Gh. Podoleanu

doi:10.1117/12.813637

13 March 2009 Effect of masticatory load on crack deflection/penetration investigated with en-face optical coherence tomography in ceramic fixed partial dentures

Cosmin Sinescu, Meda Lavinia Negrutiu, Liviu Marsavina, Radu Negru, Mihai Hluscu, Cristiana Caplescu, Adrian Bradu, Michael Hughes, Mihai Rominu, Adrian Gh. Podoleanu

Author Affiliations +

Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 72584K (2009) https://doi.org/10.1117/12.813637
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States

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.

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Cosmin Sinescu, Meda Lavinia Negrutiu, Liviu Marsavina, Radu Negru, Mihai Hluscu, Cristiana Caplescu, Adrian Bradu, Michael Hughes, Mihai Rominu, and Adrian Gh. Podoleanu "Effect of masticatory load on crack deflection/penetration investigated with en-face optical coherence tomography in ceramic fixed partial dentures", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72584K (13 March 2009); https://doi.org/10.1117/12.813637

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