I sent the YouTube of that to my dentist and suggested he show it at his next staff meeting. He told me they show it at dental school.
I believe it.
Conway’s ability to improvise with unscripted material, making Korman break character and laugh himself silly in the dentists chair made it one of the best moments in TV history.
Burnett in an interview about that skit years later said it was Conway improvising on the fly that made it memorable. First time they taped that skit the audience yawned and the skit was stale. Conway told Burnett he could spice things up with unscripted stuff for the second taping - Burnett gave him the OK and the rest was history.