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A crown is a cover or âcapâ your dentist can put on a tooth. The crown restores the tooth to its normal shape, size and function. The purpose of a crown is to make the tooth stronger or improve the way it looks. You may need a crown if you:
A dental crown is a dental material that is applied over the crown of the tooth to provide it with protection and support. Types of Dental Crown Materials. There are four different types of materials used for dental crowns: All ceramic (porcelain-based). Porcelain fused to metal. Gold alloys. Base metal alloys.