I had an appointment to install a crown this morning. This was a first for me. Have been going to Dr. Muldoon for several years with great results. They take photos and design the crown right there in 3D. Then have a machine that cuts it out of a block of porcelain in about 8 minutes, I got to watch the machine manufacture my crown. He then made sure that it fit properly, cured it for 20 minutes and then installed it. All in 2 hours painlessly. Pretty cool!