When a tooth is weakened because of extensive decay, a crown (often called a cap) is used to protect the tooth in order to restore it to its original shape and size. After decay is removed and cleaned from the tooth, a preformed crown is placed and cemented over the tooth. Unlike adult crowns, in which the crown is custom-made to fit the tooth and requires two appointments, baby crowns can be placed in one visit.
Crowns are incredibly strong due to the fact that they cover the entire tooth. This protects and strengthens the remaining tooth structure. Crowns can be silver in color (stainless steel) or white (pre-fabricated porcelain).