Abstract: The invention concerns a digital method for obtaining an impression. The impression is a radio-digital impression obtained by a scanner-type X-ray generating apparatus. A file of digital data is generated and, in a preferred embodiment, transmitted by telematic channel to a prosthesis manufacturing centre. The latter is equipped with a micro-computer controlling, on the basis of the digital data and a specific program, machine-tools for producing prostheses and/or master casts. The invention also concerns an instrumentation architecture for implementing said method comprising a scanner-type X-ray generator.