crowns are a type of dental restoration that are used to restore strength, functionality, shape, and size to a tooth, and to improve its appearance. They are used to protect a tooth that has become weakened (for example by decay) or cracked, by holding it together and preventing it from breaking. Crowns are also used to replace an old, broken or failing tooth filling. They can also be used to cover a large filling if there isn't much natural tooth structure left. Crowns are used to make a cosmetic modification such as closing spaces between teeth, or reshaping or rotating teeth. Crowns are used to hold dental bridges in place. A crown is used to cover a dental implant. A crown is recommended to restore strength to any tooth that has undergone root canal therapy.
what are crowns made of
