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KMID : 0353319960200020133
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Oral Biology Research
1996 Volume.20 No. 2 p.133 ~ p.147
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A study of early detection of enamel caries by the luminescence excited by Argon laser
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Abstract
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The aim of the present study was to describe the safe and convenient method for the early
detection of enamel caries using laser fluorescence. Fluorescence from natually carious lesion of human teeth illuminated by an argon laser(488nm) was observed and photographed using barrier filter. Intact enamel was found to fluorescence with a yellowish light. Whereas, incipient caries lesions in the enamel were clearly visible as dark areas in contrast to the fluorescence surroundings.
For evaluation of accuracy of this method, lesion depth measured by the laser fluorescence in light microscope was compared with that polarizing microscope. The results from the present study can be summarized as follows:
1. Enamel caries of smooth surface was observed as pale white spot and undefined outline in ordinary light. Whereas, lesion was clearly visible as dark spot in laser fluorescence.
2. There was no difference between ordinary light view and laser fluorescence in occlusal surface and inteaproximal surface.
3. There was no significant difference between the lesion depth observed by laser fluorescence with light microscope and polarizing microscope. Apparent correlation exists between two groups.
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