Dental scanning technologies, married with high precision rapid prototype dental technologies, are spurring a digital revolution in the world of dentistry. For example, before, we had to make a physical mold of teeth and cast a clay mold to correctly position crowns, but today, dentists can simply make a 3D scan of the teeth and build the 3D dental model directly on a 3D printer with great accuracy. Dental labs can produce, accurately and rapidly, crowns, bridges and a range of orthodontic appliances that make the process more comfortable and less intrusive for the patient.