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Proceedings Paper

SOPROCARE - 450 nm wavelength detection tool for microbial plaque and gingival inflammation: a clinical study
Author(s): P. Rechmann; Shasan W. Liou; Beate M.T. Rechmann; John D.B. Featherstone
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Paper Abstract

Gingivitis due to microbial plaque and calculus can lead over time if left untreated to advanced periodontal disease with non-physiological pocket formation. Removal of microbial plaque in the gingivitis stage typically achieves gingival health. The SOPROCARE camera system emits blue light at 450 nm wavelength using three blue diodes. The 450 nm wavelength is located in the non-ionizing, visible spectral wavelength region and thus is not dangerous. It is assumed that using the SOPROCARE camera in perio-mode inflamed gingiva can easily be observed and inflammation can be scored due to fluorescence from porphyrins in blood. The assumption is also that illumination of microbial plaque with blue light induces fluorescence due to the bacteria and porphyrin content of the plaque and thus can help to make microbial plaque and calculus visible. Aim of the study with 55 subjects was to evaluate the ability of the SOPROCARE fluorescence camera system to detect, visualize and allow scoring of microbial plaque in comparison to the Turesky modification of the Quigley and Hein plaque index. A second goal was to detect and score gingival inflammation and correlated the findings to the Silness and Löe gingival inflammation index. The study showed that scoring of microbial plaque as well as gingival inflammation levels similar to the established Turesky modified Quigley Hein index and the Silness and Löe gingival inflammation index can easily be done using the SOPROCARE fluorescence system in periomode. Linear regression fits between the different clinical indices and SOPROCARE scores in fluorescence perio-mode revealed the system’s capacity for effective discrimination between scores.

Paper Details

Date Published: 27 February 2014
PDF: 7 pages
Proc. SPIE 8929, Lasers in Dentistry XX, 892906 (27 February 2014); doi: 10.1117/12.2047275
Show Author Affiliations
P. Rechmann, Univ. of California, San Francisco (United States)
Shasan W. Liou, Univ. of California, San Francisco (United States)
Beate M.T. Rechmann, Univ. of California, San Francisco (United States)
John D.B. Featherstone, Univ. of California, San Francisco (United States)


Published in SPIE Proceedings Vol. 8929:
Lasers in Dentistry XX
Peter Rechmann; Daniel Fried, Editor(s)

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