A type of restoration that completely caps or encircles a tooth or dental implant is considered a crown (also referred to as a tooth cap). Crowns are often needed when a large cavity threatens the ongoing health of a tooth or the tooth has been chipped such as a front tooth crown. They are typically bonded to the tooth using a dental cement. The most common method of crowning a tooth involves using a dental impression of a prepared tooth by a dentist to fabricate the crown outside of the mouth. A temporary crown is created until the permanent crown is ready. The permanent crown can then be inserted at a separate dental appointment. Crowns come in a variety of types including tooth colored, gold, and porcelain. The cost of a crown will vary depending on the type of crown used.