Dental crowns cover teeth weakened by cavities, large fillings or fractures. Crowns cover most, or all, of a damaged tooth. The procedure requires two office visits. The tooth’s enamel is filed down to make room for the crown. If a large area of the tooth is damaged or missing, the dentist uses filling material to build a tooth to support the crown. An impression is made and a temporary crown is placed while the permanent crown is manufactured. During the second visit, the temporary crown is removed and the permanent crown is placed. The dentist checks the fit of the crown before it is permanently cemented into place.