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