J Korean Acad Pediatr Dent. 2004;31(3): 506-515.
COMPARATIVE STUDY ON THE RATE OF DENTAL ENAMEL DEMINERALIZATION USING A QLF
이창근, 유승훈, 김종수
단국대학교 치과대학 소아치과학교
Corresponding Author: 김종수 ,
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ABSTRACT
The objective of this study was to compare the rate of in vitro demineralization of bovine permanent (BP), human deciduous (HD) and human permanent (HP) enamel. Twenty aye flattened and polished enamel samples for each group (BP, HD, HP) were immersed in a demineralizing solution (0.1 mol/L lactic acid, 0.2% Carbopol 907, and 50% saturated hydroxyapatite) for 1, 2, 4 or 8 days. All 25 samples from each group were subjected to Quantitative light induced fluorescence analysis (QLF) and 5 samples from each group were randomly selected for Transverse Microradiography analysis (TMR). Integrated mineral loss (IML) and lesion depth (LD) were determined by TMR. The fluorescence radiance (FR) of sound enamel (FRS), demineralized enamel (FRD) were determined by QLF and FR ratio (FRD/FRS) was calculated. Bovine enamel samples showed significant correlation between FR ratio and lesion depth(p<0.05) and deciduous enamel samples does not showed significant correlation between FR ratio and lesion depth(p>0.05). Permanent enamel samples showed significant correlation between FR ratio and lesion depth(p<0.05) The constant of demineralization time between FR ratio from regression analysis were as follows: bovine enamel was -4.643(p<0.05) deciduous enamel was -5.421(p<0.05) and permanent enamel was -4.435(p<0.05).
Keywords: Quantitative Light-induced Fluorescence | Early detection | Dental caries | Enamel | Bovine
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