I understand what u said and i believe that its a personal private information which a DR should keep it safe but its a research situation and i really need to reach a model that i dont have it in my country .
the main problem is that the technology of digital scanning is not here yet and we cant have a 3d model in computer,i hope u can help me trough this problem and ask your patient to help me for university researchers.
btw thx for your replay
My guess is that anyone's impression or scan is their personal health information. While I guess you could google this type of file and try to find one, I don't think you should expect any practicing dentist to give you a file of their own patients since its a violation of the patient's privacy. You could ask a dentist to scan your teeth and give you your own impression in STL format.