In-vivo quantification of natural incipient caries lesions using the quantitative light-induced fluoroscence method: a reproducibility study

Sofia Tranaeus; Xie-Qi Shi; Karin Trollsas; Lars-Erik Lindgren; Birgit Angmar-Mansson

doi:10.1117/12.380833

24 March 2000 In-vivo quantification of natural incipient caries lesions using the quantitative light-induced fluoroscence method: a reproducibility study

Sofia Tranaeus, Xie-Qi Shi, Karin Trollsas, Lars-Erik Lindgren, Birgit Angmar-Mansson

Author Affiliations +

Proceedings Volume 3910, Lasers in Dentistry VI; (2000) https://doi.org/10.1117/12.380833
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States

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.

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Sofia Tranaeus, Xie-Qi Shi, Karin Trollsas, Lars-Erik Lindgren, and Birgit Angmar-Mansson "In-vivo quantification of natural incipient caries lesions using the quantitative light-induced fluoroscence method: a reproducibility study", Proc. SPIE 3910, Lasers in Dentistry VI, (24 March 2000); https://doi.org/10.1117/12.380833

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