Secondary caries detection with a novel fluorescence-based camera system in vitro

Olivier Brede; Claudia Wilde; Felix Krause; Matthias Frentzen; Andreas Braun

doi:10.1117/12.841776

5 March 2010 Secondary caries detection with a novel fluorescence-based camera system in vitro

Olivier Brede, Claudia Wilde, Felix Krause, Matthias Frentzen, Andreas Braun

Proceedings Volume 7549, Lasers in Dentistry XVI; 75490H (2010) https://doi.org/10.1117/12.841776
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

The aim of the study was to assess the ability of a fluorescence based optical system to detect secondary caries. The optical detecting system (VistaProof) illuminates the tooth surfaces with blue light emitted by high power GaN-LEDs at 405 nm. Employing this almost monochromatic excitation, fluorescence is analyzed using a RGB camera chip and encoded in color graduations (blue - red - orange - yellow) by a software (DBSWIN), indicating the degree of caries destruction. 31 freshly extracted teeth with existing fillings and secondary caries were cleaned, excavated and refilled with the same kind of restorative material. 19 of them were refilled with amalgam, 12 were refilled with a composite resin. Each step was analyzed with the respective software and analyzed statistically. Differences were considered as statistically significant at p<0.05. There was no difference between measurements at baseline and after cleaning (Mann Whitney, p>0.05). There was a significant difference between baseline measurements of the teeth primarily filled with composite resins and the refilled situation (p=0.014). There was also a significant difference between the non-excavated and the excavated group (Composite p=0.006, Amalgam p=0.018). The in vitro study showed, that the fluorescence based system allows detecting secondary caries next to composite resin fillings but not next to amalgam restorations. Cleaning of the teeth is not necessary, if there is no visible plaque. Further studies have to show, whether the system shows the same promising results in vivo.

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Olivier Brede, Claudia Wilde, Felix Krause, Matthias Frentzen, and Andreas Braun "Secondary caries detection with a novel fluorescence-based camera system in vitro", Proc. SPIE 7549, Lasers in Dentistry XVI, 75490H (5 March 2010); https://doi.org/10.1117/12.841776

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KEYWORDS

Dental caries

Luminescence

Teeth

Cameras

Composite resins

Composites

Imaging systems

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