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gold teeth
Gold teeth are a form of dental prosthesis. They are sometimes used for cosmetic purposes.
==Dental restoration==
Dentists have used gold for filling cavities (before mercury amalgam became available), for crowns, and for other purposes since ancient times. Gold is malleable, nearly immune to corrosion, and hard enough to form a biting surface that can be used for years. Gold was used before silver became available and has continued to be used for specialized purposes. Dental restorations are often made from a combination of precious metals. After 1980, gold inlays and gold foil work became rare in the United States.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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