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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 crown could be used for a number of other reasons, for example: 1  you may have a discoloured filling and would like to improve the appearance of the tooth. 2  you may have had a root filling and need a crown to protect what is left of the tooth.  it may help to hold a bridge or denture firmly in place.