A crown is an artificial replacement that restores missing tooth structure by surrounding part or all of the remaining structure with a material such as a cast metal, porcelain, or a combination of materials such as metal and porcelain; to place on a tooth, dental implant or tooth substitute.
The cost varies in proportion to the quality chosen by the customer.
Today, we can make them out of pure porcelain, ceramic. The potential for excellent esthetics, the strength of modern porcelains and the promise of healthy tissue have made the procedure popular. The predominant material choice for all-ceramic crowns today is either zirconia, or aluminous materials. They provide a metal-free esthetic option with a number of benefits.