Crowns
A crown fits over the entire top of the tooth and above the gum line.  Crowns cover, protect, seal and strengthen a tooth.  A crown is needed when a filling alone will not work. 

There are many situations that may call for a crown including large tooth decay, old fillings that have broken down and/or have decay around them, or a cracked tooth.

For more information, please visit:

Web MD:
- Why crowns are needed