Measures photological changes in tooth structure caused by caries. It is especially useful for pit-and-fissure areas, even when the outer tooth surface is intact. Detects incipient or subsurface lesions that are undiagnosed by conventional examination methods. Avoids "exploratory” excavation of healthy teeth. Uses light energy versus radiation with no danger posed to patient, operator, or staff. Compact, portable device with user-friendly design. 1-year warranty.Dimensions: 120mm H x 150mm W x 110mm DWeight: 0.6 kg