There are several steps involved in getting a dental crown. First, your tooth or teeth is reduced 1.5 millimeters. An impression is then made of the tooth, from which a life-size model is built from hard stone. A technician then constructs the real crown from the stone model. As with veneers, you're sent home with your provisional set to test. Once the provisional is accepted by both patient and dentist, its important elements are copied into the final crowns.
Each side of the remaining tooth is tapered slightly to hold the crown in place. Next, the crown is tried on to fit comfortably under your gum tissue so any margin between the tooth and crown is hidden. The dentist spends time checking this fit, x-raying to verify it, and adjusting the bite very carefully. It's then finally attached with dental cement or a resin bonding cement.