Some science fiction thing. Or something about dentists?
Why does dentist training take so long? It's not like other medical specialist areas where, say, a complex diagnosis will require observation, case comparisons, medication and dietary finesse, great variables and a wealth of experience.
It's, surely, more like "Ah. They look OK, keep brushing regularly." or "That molar's a bit fucked. I'll get me pliers."
Fuck knows what the film was though. Too long ago to remember now.
Could be any one of the above. Don't know.