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Proceedings Paper

Adhesive improvement in optical coherence tomography combined with confocal microscopy for class V cavities investigations
Author(s): Mihai Rominu; Cosmin Sinescu; Meda Lavinia Negrutiu; Roxana Otilia Rominu; Daniela Maria Pop; Florin Topala; Adelina Stoia; Emanuela Petrescu; Adrian Bradu; George Dobre; Adrian Gh. Podoleanu
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Paper Abstract

The purpose of this study is to present a non invasive method for the marginal adaptation evaluation in class V composite restorations. Standardized class V cavities prepared in human extracted teeth were filled with composite resin (Premise, Kerr). The specimens were thermocycled. The interfaces were examined by Optical Coherence Tomography (OCT) combined with confocal microscopy and fluorescence. The optical configuration uses two single mode directional couplers with a superluminiscent diode as the source at 1300 nm. The scanning procedure is similar to that used in any confocal microscope, where the fast scanning is en-face (line rate) and the depth scanning is much slower (at the frame rate). Gaps at the interfaces as well as on the inside of the composite resin were identified. OCT has numerous advantages that justify its in vivo and in vitro use compared to conventional techniques. One of the main concerns was the fact that at the adhesive layer site it was very hard to tell the adhesive apart from material defects. For this reason the adhesive was optimized in order to be more scattering. This way we could make a difference between the adhesive layer and the material defects that could lead to microleakages.

Paper Details

Date Published: 9 March 2010
PDF: 8 pages
Proc. SPIE 7626, Medical Imaging 2010: Biomedical Applications in Molecular, Structural, and Functional Imaging, 76260Y (9 March 2010); doi: 10.1117/12.844538
Show Author Affiliations
Mihai Rominu, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Cosmin Sinescu, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Meda Lavinia Negrutiu, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Roxana Otilia Rominu, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Daniela Maria Pop, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Florin Topala, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Adelina Stoia, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Emanuela Petrescu, Univ. de Medicina si Farmacie Victor Babes, Timisoara (Romania)
Adrian Bradu, Univ. of Kent (United Kingdom)
George Dobre, Univ. of Kent (United Kingdom)
Adrian Gh. Podoleanu, Univ. of Kent (United Kingdom)


Published in SPIE Proceedings Vol. 7626:
Medical Imaging 2010: Biomedical Applications in Molecular, Structural, and Functional Imaging
Robert C. Molthen; John B. Weaver, Editor(s)

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