I don't know for sure, but I get the impression that GPRs are done in a 24/7 teaching hospital environment whereas AEGDs are done in a M-F post grad dental school environment. I would imagine that both programs would likley enable one to increase their skills in providng dental services to compromised patients such as those with oral cancer, full blown aids, advanced diabetes, etc. Those in a GPR may get more exposure to dealing with emergency trauma cases.