Assessment of dental plaque by optoelectronic methods

Meda-Lavinia Negrutiu D.D.S.; Cosmin Sinescu; Cristina Maria Bortun; Mihaela-Codrina Levai; Florin Ionel Topala; Emanuela Lidia Crăciunescu; Andreea Codruta Cojocariu; Virgil Florin Duma; Adrian Gh. Podoleanu

doi:10.1117/12.2191640

22 March 2016 Assessment of dental plaque by optoelectronic methods

Meda-Lavinia Negrutiu D.D.S., Cosmin Sinescu, Cristina Maria Bortun, Mihaela-Codrina Levai, Florin Ionel Topala, Emanuela Lidia Crăciunescu, Andreea Codruta Cojocariu, Virgil Florin Duma, Adrian Gh. Podoleanu

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Proceedings Volume 9670, Sixth International Conference on Lasers in Medicine; 96700W (2016) https://doi.org/10.1117/12.2191640
Event: Sixth International Conference on Lasers in Medicine, 2015, Bucharest, Romania

Abstract

The formation of dental biofilm follows specific mechanisms of initial colonization on the surface, microcolony formation, development of organized three dimensional community structures, and detachment from the surface. The structure of the plaque biofilm might restrict the penetration of antimicrobial agents, while bacteria on a surface grow slowly and display a novel phenotype; the consequence of the latter is a reduced sensitivity to inhibitors. The aim of this study was to evaluate with different optoelectronic methods the morphological characteristics of the dental biofilm. The study was performed on samples from 25 patients aged between 18 and 35 years. The methods used in this study were Spectral Domain Optical Coherence Tomography (SD-OCT) working at 870 nm for in vivo evaluations and Scanning Electron Microscopy (SEM) for validations. For each patient a sample of dental biofilm was obtained directly from the vestibular surface of the teeth's. SD-OCT produced C- and B-scans that were used to generate three dimensional (3D) reconstructions of the sample. The results were compared with SEM evaluations. The biofilm network was dramatically destroyed after the professional dental cleaning. OCT noninvasive methods can act as a valuable tool for the 3D characterization of dental biofilms.

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Meda-Lavinia Negrutiu D.D.S., Cosmin Sinescu, Cristina Maria Bortun, Mihaela-Codrina Levai, Florin Ionel Topala, Emanuela Lidia Crăciunescu, Andreea Codruta Cojocariu, Virgil Florin Duma, and Adrian Gh. Podoleanu "Assessment of dental plaque by optoelectronic methods", Proc. SPIE 9670, Sixth International Conference on Lasers in Medicine, 96700W (22 March 2016); https://doi.org/10.1117/12.2191640

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KEYWORDS

Optical coherence tomography

In vivo imaging

Scanning electron microscopy

Bacteria

Optoelectronics

Medicine

Raman spectroscopy

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