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Proceedings Paper

Comparison of light-induced and laser-induced fluorescence methods for the detection and quantification of enamel demineralization
Author(s): Masatoshi Ando D.D.S.; Mostafa Analoui; Bruce R. Schemehorn; George K. Stookey
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Paper Abstract

The Quantitative Laser-Induced Fluorescence (QLF) technique has been sued for diagnosis of early caries in permanent teeth (PT). The objective of this study was to determine the caries quantification ability of QLF in deciduous teeth (DT). Sixty sound teeth, thirty DT and thirty PT, were used. All teeth were cleaned to remove debris and equally divided into three groups. Lesions were created in small windows (0.8x2.0 mm2) on buccal or labial surface for 48, 72, and 96 hr. Lesion images were made with a 488 nm argon laser (QLF I) and then with a 370 ± 80 nm violet-blue light (QLF II). Both images were analyzed to determine the mean percent change in fluorescence radiance (ΔF). A center section from the lesions was taken for analysis with microradiography. The lesion depth and loss of mineral content were determined. The correlations between ΔF and lesion depth as well as ΔZ in DT were 0.76 and 0.84 with QLF I, 0.81 and 0.88 with QLF II, respectively. It can be concluded the ability of QLF to quantify white-spots in DT is better than in PT.

Paper Details

Date Published: 19 May 1999
PDF: 6 pages
Proc. SPIE 3593, Lasers in Dentistry V, (19 May 1999); doi: 10.1117/12.348342
Show Author Affiliations
Masatoshi Ando D.D.S., Indiana Univ. School of Dentistry (United States)
Mostafa Analoui, Indiana Univ. School of Dentistry (United States)
Bruce R. Schemehorn, Indiana Univ. School of Dentistry (United States)
George K. Stookey, Indiana Univ. School of Dentistry (United States)

Published in SPIE Proceedings Vol. 3593:
Lasers in Dentistry V
John D. B. Featherstone; Peter Rechmann D.D.S.; Daniel Fried, Editor(s)

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