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KMID : 1035320150420030187
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Korean Society for Dental Materials
2015 Volume.42 No. 3 p.187 ~ p.196
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Effect of light source and filter on caries detection by light-induced fluor
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Kim Min-Jung
Jin Bo-Hyoung
Lim Bum-Soon
Lee In-Bog
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Abstract
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The purpose of this study was to evaluate the effect of the wavelengths of LED device with caries inspecting function and filters on detection of dental caries using light-induced fluorescence. LED light of 405 nm or 460 nm was irradiated to 9 extracted human teeth with initial carious lesions. Images of teeth and fluorescence through one of three caries inspecting filters (Medes, Dentalo, and Find) or one composite curing filter (Elliptic) were captured by using a CCD camera. In the images, RGB (red, green, blue) values of red fluorescence emitting areas were analyzed. All images through all kinds of filter under 405 nm LED light showed red fluorescence from the carious lesions. However, red fluorescence was not emitted under 460 nm light. The fluorescence observed with Dentalo filter was better than with ambient and Find filter (p<0.05). In conclusion, the LED device with caries inspecting mode could be used to detect carious lesion by fluorescence. Dentalo filter showed better results than Find filter for visualizing red fluorescence from carious lesions.
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KEYWORD
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Caries detection, Filter, Fluorescence, LED dental curing lights
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