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Showing 1 to 9 of 9 for “"QLF"”.
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Performance of several diagnostic systems on detection of occlusal primary caries in permanent teeth
… quantitative light-induced fluorescence systems QLF; Inspektor™ Pro and QLF-D Biluminator™2 (Inspektor Research Systems B.V.; Amsterdam, The Netherlands); and photothermal radiometry and modulated luminescence (PTR/LUM) of The Canary System® (Quantum Dental Technologies; Toronto, Canada). All …
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Fluoride varnish concentration gradient effects measured by quantitative light fluorescence
… to determine if Quantitative Light Fluorescence(QLF) can detect differences in lesions developed when exposed to an artificial caries environment and fluoride varnish. Human teeth specimens were subjected to a caries challenge and treated with a sample of fluoride varnish from one of five …
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Ability of Caries Detection Methods to Determine Caries Lesion Activity
… (SLT) and caries activity, as determined by QLF during dehydration (△QD); 3) To determine lesion severity by comparing lesion volume and maximum depth correlation with △Q value at 15 s from QLF during dehydration. Materials and Methods: Thirty extracted human premolars exhibiting …
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Treatment of Enamel Demineralization Following Orthodontic Therapy
… lesions, and 2) quantitative laser fluorescence (QLF), in which the depth and area of the lesions were determined more objectively. Lnterexaminer agreement was almost perfect for the clinical exams. All three groups were significantly different with regards to reduction of number of white spots …
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White spot lesion regression using casein phosphopeptide amorphous calcium phosphate complexes alone or combined with microabrasion.
… Quantitative light-induced fluorescence (QLF) was used to measure mineral content changes in WSLs immediately before (T1) and 2 weeks after treatment (T2). A two-within subject factor ANOVA was used to analyze the significance of any change from T1 to T2 in fluorescence, indicating mineral …
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The Identification of Composite Resin Restorations within Natural Teeth
… light (UVL), and Quantitave Laser Fluorescence (QLF). As enamel, dentine and composite resin all have different fluorescent properties, ultra-violet light (UVL) has been of particular interest as a method of detecting the presence of composite resin in teeth. The aim of this study was to assess …
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Relative fluoride response of caries lesions created in fluorotic and sound teeth studied underremineralizing conditions
… Quantitative light-induced fluorescence (QLF) was used throughout the study to determine changes in enamel fluorescence relative to a sound enamel window, thereby providing information about enamel de- or remineralization. The results of this study demonstrated that enamel fluorosis levels …
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Phase equilibria, thermal expansion and symmetry relations within the HfO2-Ta2O5-TiO2-temperature system
… achieved by utilizing a quadrupole lamp furnace (QLF) (200 – 2000 ± 4 ˚C) and a conical nozzle levitator system equipped with a CO2 laser (CNL) (700 – 3000 ± 100 ˚C) in conjunction with synchrotron X-ray powder diffraction. These devices allow for (i) phase identification as a function of …
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Genetic and biochemical analysis of materials from a medieval population from Ynys Mon North Wales
… technique called Qualitative Light Fluoresence (QLF), based on autofluoresence, was used to ascertain the surface condition of the teeth. Compared to the fluorescence of modern enamel, there was a net loss of 21.8% fluorescence, although the degree of fluorescence from one sample to another …