A crown or a “cap” covers your whole tooth in a layer of porcelain. It provides extra strength and protection to your tooth to resist the strong chewing forces in your mouth.
Crowns are typically used on teeth that are broken, chipped, or have big fillings or root canals to prevent the tooth from fracturing. They can also be used to correct discoloration, misalignment, and excessive wear. They can improve the appearance of your teeth in addition to providing strength.