A new tool for early detection of tooth decay is being studied at the University of Texas Health Science Center at San Antonio, the University of Iowa, and Indiana University, supported by a grant from the National Institute of Dental and Craniofacial Research. Called Quantitative Light-induced Fluorescence (QLF), it is a small, portable camera that uses a blue light to illuminate the teeth and captures images with a yellow filter. QLF may be the ultimate detector of early caries; the fluorescent lighting is directly related to enamelís mineral content, and lesions can be identified before they progress enough to require invasive dental treatment. The fluorescence of the light displays decay as dark spots, and a dental mirror on the camera provides uniform light to the area to be recorded. The camera is connected to a computer with exclusive software that allows display and storage of the images. Whereas detection of early caries visually or radiographically is extremely difficult, researchers believe that dentists will be able to use QLF to detect carious lesions early enough to intervene with noninvasive procedures such as sealants or fluoride. Research is continuing on this innovative, new diagnostic tool.
(Source: The Mission, The University of Texas Health Science Center at San Antonio, April/ May 2006)
