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Optical Methods—Quantitative Light Fluorescence

Oral Health Research Institute, Indiana University School of Dentistry, Indiana University Emerging Technologies Center, Suite 222, 351 West Tenth Street, Indianapolis, IN 46202-4119; gstookey{at}iupui.edu

View larger version (9K): [in a new window]   Figure 1. Comparison of DMFS and QLF increments from baseline in Indiana pilot clinical study. After 4 mos, generally comparable increments were observed.

View larger version (7K): [in a new window]   Figure 2. Comparison of QLF increments (fluorescence loss) from baseline on occlusal and buccal-lingual surfaces in Indiana pilot clinical study. Much greater increments were observed on occlusal surfaces.

View larger version (32K): [in a new window]   Figure 3. Two examples of the impact of dehydration on fluorescence loss. The rapid loss of fluorescence intensity in demineralized specimens within 3 sec of dehydration time may represent a mechanism to detect active caries lesions.