This edited volume highlights oral diagnostic tools and techniques from a physicist's viewpoint. Individual chapters have been prepared by academicians as well as practitioners, with the basics of oral diagnostics presented at the start of each chapter, followed by discussion of the state-of-the-art of these tools and techniques. These chapters not only form part of this comprehensive edited collection, but they also possess a standalone character, meaning this book suits the needs of a wide range of audiences. Some of the major tools discussed include molecular spectroscopy for oral diagnostics, CBCT (Cone Beam Computed Tomography), which is a highly innovative dental diagnostic procedure, the application of MRI in dental pathologies, radiography as a diagnosis tool for oral hard tissue diseases, among other important physics-based techniques.