When a tooth sustains a large fracture, is cracked, has a very large cavity, or needs a root canal, a crown is needed to repair the damage. There are two steps to a crown procedure. The first appointment consists of shaping the tooth to receive the crown, taking a digital scan of the tooth (no more gooey impressions), and making a temporary crown. The crown is then computer milled by a dental laboratory to precisely fit your tooth. At the second visit, the crown is then bonded to your tooth.