The RVG-ui is a solid-state system for dental x-ray imaging cominging a charge-coupled device (CCD) of small pixel size (19.5 um) with a caesium iodide (Csl) scintillator. It features two sizes of sensor with receptive areas that approach the size of No. 1 and No. 2 periapical x-ray films. The spatial resolution of the RVG-ui exceeds 20 lp/mm, rivaling direct-exposure intra-oral x-ray film when the latter is optimally exposed and processed. The recording latitutde of the RVG-ui for clinically acceptable images in 25:1, making exposure error unlikely. In features such as speed of image acquisition, reduction in radiation dose, retrieval of data, and organization and storage of images, the RVG-ui system surpasses traditional x-ray film. Furthermore, it is possible to make accurate length measurements very quickly, and to apply an artificial intelligence determine the probability of proximal dental caries in enamel and dentin.