Circa 1874, my Dad arranged for me to visit my cousin in Augusta. He was a medical student at UGA med school. My Dad wanted me to be a "doctor". Ha.
So, I go down, and the fellow has a batch of Coors, it was like amazing to me. Then after 3 beers or so, he takes me to the med school and introduces me to "Jim", who was his cadaver, pretty much cut up. That was not my cup of beer.
My cousin was an interesting fellow, he already had a DDS, but decided he didn't like looking at teeth all day, so he went to med school. At one point, he was doing an ER residency and a fellow came in around 2 AM from a car accident, his mouth was mangled from hitting the steering wheel. It was a slow night, so my cousin fixed him up. A nurse told him he should have been a dentist.
I'd guess they don't do that sort of thing any more.