I don't know if this is what you mean but in Japan many dentists have machines to make tooth crowns. Not sure how common that is in the west. I went to a dentis

I don't know if this is what you mean but in Japan many dentists have machines to make tooth crowns. Not sure how common that is in the west. I went to a dentist in SF, they did something and then I had to come back in 2 weeks after they made the crown. Been to several dentists in Japan where they could make the crown while you wait 20-30 mins