Crowns and Bridges - A dental crown is a tooth-shaped cap that is placed over a tooth or a dental implant, to cover the tooth to restore its shape and size, strength and improve its appearance. The crowns, when cemented into place, fully encases the entire visible portion of a tooth that lies at and above the gum line. Crowns are often needed when a large cavity threatens the ongoing health of a tooth. They are typically bonded to the tooth using a dental cement. Crowns are made from many materials, which are usually fabricated using indirect technique.
A dental crown maybe needed to protect a weak tooth (for instance from decay), from breaking or to hold together parts of a cracked tooth; to restore an already broken tooth or a tooth that has been severely worn down; to cover and support a tooth with a large filling when there isn’t a lot of tooth left; to hold a dental bridge in place; to cover a misshapened or severely discoloured teeth; to cover a dental implant or to make a cosmetic modification.
For children, a crown may be used on primary (baby) teeth in order to, save a tooth that has been so damaged by decay that it cannot support a filling; protect the teeth of a child at high risk for tooth decay, especially when a child has difficulty keeping up with daily oral hygiene; decrease the frequency of sedation and general anesthesia for children unable because of age, behavior, or medical history to fully cooperate with the requirements of proper dental care.
Dental Bridges replace missing teeth with artificial replacements (pontic). The pontic is held in place by crowns that are anchored to surrounding teeth.