CARIES DIAGNOSTIC METHODS (Recent), Fiber-optic transillumination, Digital imaging fiber-optic transillumination, Quantitative light-induced fluorescence, DIAGNOdent laser system, Electrical caries monitor, Midwest caries I.D., Polarization-sensitive optical coherence tomography, CarieScan, Frequency-domain infrared photothermal radiometry and modulated luminescence, Cone beam computed tomography, Direct digital radiography , Multiphoton imaging, Raman spectroscopy, infrared thermography, Ultrasound, Terahertz imaging, Magnetic resonance microimaging