IMO and I'm sure many others, it completely depends on you and your doctors' working together. Ive done many of these types of cases this year, but I've been lucky enough to have a great relationship with the doctor that's been sending me the scans. We've done singles, 3-4 unit bridges, and screw retained crowns. By the way this is all posterior work, we will print a model for anything anterior. I will say, the contacts can be a little tight sometimes but he tells me its just one quick swipe and they drop right in. Occlusion, he says, has always been spot on.