Crown is a type of dental restoration which completely caps or encircles a shaved down tooth or dental implant. Crowns are often needed when a large cavity threatens the ongoing health of a tooth or root canal treated teeth.
They are typically bonded to the tooth using dental cement. Crowns can be made from many materials, which are usually fabricated using indirect methods. Crowns are often used to improve the strength or appearance of teeth, or for aesthetic purposes.
While inarguably they are beneficial to dental health, the procedure and materials are relatively expensive. They are typically made from porcelain, porcelain fused to metal, metal alloy, gold or zirconia.