Children’s permanent teeth generally are filled in the same way as adults’ permanent teeth. The making and fitting of a crown, however, is somewhat different. Until the early teens, a permanent back tooth that needs a crown typically is covered with a prefabricated stainless steel crown. Some dentists also are now using zirconia crowns (which are tooth colored). Either of these types of crowns can be placed in a single visit. Adult crowns usually require two visits.