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28 May 2004 Blue-laser-diode-excited fluorescence spectroscopy of natural carious lesions
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We report on the use of a blue laser diode to excite natural fluorescence from a range of dental samples. Sixty teeth with naturally occurring lesions were examined. The lesions were classified on visual inspection as falling into three classes as shiny lesions, dull lesions and brown lesions. The resulting fluorescence was then examined using a fibre optically coupled spectrometer in a series of wavelength bands. By examining the intensity ratios in the two wavelength bands 480-500nm and 620 to 640nm we were able to classify the lesion types and thus provide a quantifiable measurement of lesion types. This method has application for detection of dental caries as well as demonstrating potential application to evaluate lesions which may represent different degrees of caries activity.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John M. Girkin, Christel Rousseau, Andrew F. Hall D.D.S., Ronnie Strang, C. John Whitters, Steve L. Creanor D.D.S., and Adriana Cribeiro "Blue-laser-diode-excited fluorescence spectroscopy of natural carious lesions", Proc. SPIE 5313, Lasers in Dentistry X, (28 May 2004);

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