Even with just regular crowns. I've had a few root canals as I've gotten older. They scanned the old tooth, brought into 3d modelling software, modified it for purpose, checked it's resulting fit against neighboring teeth, and then sent it to a mill right in the office and had it glued into my head in less than a hour.

My doctor knows I'm into this so he always does it right next to me and turns the PC monitor so I can watch the entire process. The software is so simple almost anyone could use it. Generating a medically correct result is obviously where all the skill lies.