Method and apparatus for detecting the presence of caries in teeth using visible light
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United States of America Patent
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Oct 30, 1984
Grant Date -
N/A
app pub date -
Jan 29, 1982
filing date -
Jan 29, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for detecting the presence of caries in human teeth using visible light. The tooth is exposed to light of relatively narrow bandwidths. The light from the tooth is preferably examined by two photomultipliers or visually each examining a different wavelength. Caries are detected when the difference in the intensity of the light from the tooth at those two wavelengths changes in a predetermined manner.
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