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Proceedings Paper

In-vivo quantification of natural incipient caries lesions using the quantitative light-induced fluoroscence method: a reproducibility study
Author(s): Sofia Tranaeus; Xie-Qi Shi; Karin Trollsas; Lars-Erik Lindgren; Birgit Angmar-Mansson
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Paper Abstract

A new method for detection and quantification of natural incipient caries lesions, the Quantitative Light-induced Fluorescence method (QLF), has recently been developed. The aim of this study was to test the repeatability and reproducibility of the analytical part of the method. In vivo captured images (CCD-video camera, Panasonic WV-KS 152, with an argon ion laser as light source) of 15 different incipient caries lesions on smooth surfaces were analyzed by three analysts. The images were analyzed three times in a randomized order, twice for the first reconstructed area (P1A1 and P1A2), and then once for a second one (P2A1). Three parameters were measured, lesion area (mm2), average change in fluorescence (%), and maximum change in fluorescence (%) in the lesion. Repeated measures ANOVA were used to calculate the intra-, and inter-examiner reliability. Intra-examiner reliability for all three analysts showed an intra-class correlation coefficient, R, between 0.93 and 0.99 (for the analyses with the first patch, P1A1 and P1A2, as well as between the first and the second patch, P1A1 and P2A1). Inter-examiner reliability showed an inter-class correlation coefficient, R, between 0.95 and 0.99 (for analyses P1A1, P1A2 and P2A1). It was concluded that the Quantitative Light- induced fluorescence method showed excellent repeatability and reproducibility concerning the analytical part of the method.

Paper Details

Date Published: 24 March 2000
PDF: 7 pages
Proc. SPIE 3910, Lasers in Dentistry VI, (24 March 2000); doi: 10.1117/12.380833
Show Author Affiliations
Sofia Tranaeus, Karolinska Institutet (Sweden)
Xie-Qi Shi, Karolinska Institutet (Sweden)
Karin Trollsas, Karolinska Institutet (Sweden)
Lars-Erik Lindgren, Karolinska Institutet (Sweden)
Birgit Angmar-Mansson, Karolinska Institutet (Sweden)

Published in SPIE Proceedings Vol. 3910:
Lasers in Dentistry VI
John D. B. Featherstone; Peter Rechmann; Daniel Fried, Editor(s)

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