there are awesome awesome sla machines being aimed at dentists art the moment.
Had a fairly long chat with someone at the tct selling machines aimed at the orthodontist industry. Think I took pictures, the machines aren't cheap - but the recults are pretty amazing.
I'll have a look at the ipad when i;m back in the house and find out who they were :-)

They will cost more than a form :-)

But i suppose in the states, making orthodontist accessories is like printing money anyway :-)