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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:
Each tooth consists of three main parts - the crown, the neck and root. 1  The crown is the visible part of the tooth. 2  The neck is the area of the tooth between the crown and the root. 3  The root is the portion of the tooth that extends through the gum and into the bone of the jaw.