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J Korean Acad Pediatr Dent. 2011;38(4): 317-326.
Hyung-Ju Park, Jong-Soo Kim, Seung-Hoon Yoo, Ju-Sun Shin
Department of Pediatric Dentistry, Dental College, Dankook University
Corresponding Author: Jong-Soo Kim ,Tel: 041-550-1931, Email: jskim@dku.edu
Received: September 23, 2011;  Accepted: November 14, 2011.
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QLF-D system composed with DSLR(digital single-lens reflex) camera, and the images of natural enamel caries and artificial caries was developed from 2 days to 14 days captured by QLF-D system. The correlation between lesion depth of the polarized microscope and luminosity ratio of QLF-D image was analyzed and the results were summarized as follows: 1. The Pearson correlation value between the lesion depth of polarized microscope images and luminosity ratio of QLF-D images was 0.969(p<0.01). 2. From Regression analysis of lesion depth from polarized image by demineralized period, the equation was y = 8.67x - 1.16(p<0.05). 3. From Regression analysis of luminosity ratio from QLF-D image by demineralized period, the equation was y = 3.53x + 6.42(p<0.05). From the results, QLF-D system can detect the enamel caries at the very early stage and can monitor the progression of demineralization and remineralization. For the convenient use of QLF-D system in the laboratory, the image analysing software was needed to analyze of interest site of enamel caries lesion.
Keywords: Primary dentition | Initial enamel caries | Early detection | Quantitative Light-induced Fluorescence
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