porchdog, 3shape scanners must have licensed 3shape software to run it, you can import into exocad but you would be paying for both. 3shape is a good solution for beginners, exo is a bit more advanced for the computer illiterate, IMO. Its apples and oranges, samsung and apple, 3shape and exo. Both do what you need it to do in the end.
It could be hard to translate your denture skills into CAD design skills. Clicking a mouse is quite a bit different than a spatula and flame. I think many people are thinking this will save them time, and I think they quite possibly could be faster doing it the old fashioned way. Just a different way to skin the cat.