There are a number of reasons one of your teeth might need a crown: Large areas of decay, cracks, a broken or worn down tooth or to keep a tooth from breaking. Ultimately, a crown is like a cap or cover for a tooth that serves to protect the tooth and keep it functional. Crowns also lend cosmetic beauty to teeth. Today’s crowns are both beautiful and functional. There are a wide variety of crown materials to choose from and we will discuss with you which material best suits your situation.