Direct composite fillings: an optical coherence tomography and microCT investigation

Meda L. Negrutiu; Cosmin Sinescu D.D.S.; Mugurel V. Borlea; Adrian Manescu; Virgil F. Duma; Mihai Rominu M.D.; Adrian Gh. Podoleanu

doi:10.1117/12.2081661

18 March 2015 Direct composite fillings: an optical coherence tomography and microCT investigation

Meda L. Negrutiu, Cosmin Sinescu D.D.S., Mugurel V. Borlea, Adrian Manescu, Virgil F. Duma, Mihai Rominu M.D., Adrian Gh. Podoleanu

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Proceedings Volume 9412, Medical Imaging 2015: Physics of Medical Imaging; 94123R (2015) https://doi.org/10.1117/12.2081661
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

The treatment of carious lesions requires removal of affected dental tissue thus creating cavities that are to be filled with dedicated materials. There are several methods known which are used to assess the quality of direct dental restorations, but most of them are invasive. Optical tomographic techniques are of particular importance in the medical imaging field, because these techniques can provide non-invasive diagnostic images. Using an en-face version of OCT, we have recently demonstrated real time thorough evaluation of quality of dental fillings. The major aim of this study was to analyses the optical performance of adhesives modified with zirconia particles in different concentrations in order to improve the contrast of OCT imaging of the interface between the tooth structure, adhesive and composite resin. The OCT investigations were validated by micro CT using synchrotron radiation. The OCT Swept Source is a valuable investigation tool for the clinical evaluation of class II direct composite restorations. The unmodified adhesive layer shows poor contrast on regular OCT investigations. Adding zirconia particles to the adhesive layer provides a better scattering which allows a better characterization and quantification of direct restorations.

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Meda L. Negrutiu, Cosmin Sinescu D.D.S., Mugurel V. Borlea, Adrian Manescu, Virgil F. Duma, Mihai Rominu M.D., and Adrian Gh. Podoleanu "Direct composite fillings: an optical coherence tomography and microCT investigation", Proc. SPIE 9412, Medical Imaging 2015: Physics of Medical Imaging, 94123R (18 March 2015); https://doi.org/10.1117/12.2081661

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KEYWORDS

Adhesives

Optical coherence tomography

Zirconium dioxide

Interfaces

Composite resins

Particles

Teeth

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