Your teeth are comprised of two main parts. The Crown is the part that you see above the gum and the Root is the part below the gum that holds your tooth firmly in your jawbone. When the crown of the tooth becomes weakened by decay, root canal therapy or fractures, it can be restored and strengthened by an artificial crown. Artificial crowns are covers that fit over a damaged or badly stained tooth. They look natural and require only the same care necessary for your natural crowns.