If you have a large cavity that's too big for a filling, it may be time for a crown.

You may also need a crown if your tooth is:

• Severely worn down.
• Cracked.
• Weakened.

Crowns are also recommended following a root canal on a tooth, because the tooth is more fragile and needs protection.

You may be a candidate for a crown if you're missing a tooth, and the dentist needs to put in a dental bridge or a tooth implant.