Ceramic and polymeric dental onlays evaluated by photo-elasticity, optical coherence tomography, and micro-computed tomography

Cosmin Sinescu; Meda Negrutiu; Florin Topala; Ciprian Ionita; Radu Negru; Mihai Fabriky; Corina Marcauteanu; Adrian Bradu; George Dobre; Liviu Marsavina; Mihai Rominu M.D.; Adrian Podoleanu

doi:10.1117/12.896717

30 September 2011 Ceramic and polymeric dental onlays evaluated by photo-elasticity, optical coherence tomography, and micro-computed tomography

Cosmin Sinescu, Meda Negrutiu, Florin Topala, Ciprian Ionita, Radu Negru, Mihai Fabriky, Corina Marcauteanu, Adrian Bradu, George Dobre, Liviu Marsavina, Mihai Rominu M.D., Adrian Podoleanu

Author Affiliations +

Proceedings Volume 8172, Optical Complex Systems: OCS11; 817208 (2011) https://doi.org/10.1117/12.896717
Event: SPIE Optical Systems Design, 2011, Marseille, France

Abstract

Dental onlays are restorations used to repair rear teeth that have a mild to moderate amount of decay. They can also be used to restore teeth that are cracked or fractured if the damage is not severe enough to require a dental crown. The use of onlays requires less tooth reduction than does the use of metal fillings. This allows dentists to conserve more of a patient's natural tooth structure in the treatment process. The aims of this study are to evaluate the biomechanical comportment of the dental onlays, by using the 3D photo elasticity method and to investigate the integrity of the structures and their fitting to the dental support. For this optical coherence tomography and micro-computed tomography were employed. Both methods were used to investigate 37 dental onlays, 17 integral polymeric and 20 integral ceramic. The results permit to observe materials defects inside the ceramic or polymeric onlays situate in the biomechanically tensioned areas that could lead to fracture of the prosthetic structure. Marginal fitting problems of the onlays related to the teeth preparations were presented in order to observe the possibility of secondary cavities. The resulted images from the optical coherence tomography were verified by the micro-computed tomography. In conclusion, the optical coherence tomography can be used as a clinical method in order to evaluate the integrity of the dental ceramic and polymeric onlays and to investigate the quality of the marginal fitting to the teeth preparations.

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Cosmin Sinescu, Meda Negrutiu, Florin Topala, Ciprian Ionita, Radu Negru, Mihai Fabriky, Corina Marcauteanu, Adrian Bradu, George Dobre, Liviu Marsavina, Mihai Rominu M.D., and Adrian Podoleanu "Ceramic and polymeric dental onlays evaluated by photo-elasticity, optical coherence tomography, and micro-computed tomography", Proc. SPIE 8172, Optical Complex Systems: OCS11, 817208 (30 September 2011); https://doi.org/10.1117/12.896717

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