Near-Infrared Imaging for Detecting Caries and Structural Deformities in Teeth
Two-dimensional radiographs, while commonly used for evaluating sub-surface hard structures of teeth, have low sensitivity for early caries lesions particularly those on tooth occlusal surfaces. Radiographs are also frequently refused by patients over safety concerns. Translucency of teeth in the nearinfrared (NIR) range offers a non-ionizing and safe approach to detect dental caries. We report construction of a NIR (850 nm) LED imaging system, comprised of a NIR source and an intraoral camera for rapid dental evaluations.