Q&A: Do I need a crown, root canal or both if I have a cracked tooth but it does not show on the x-ray?
Dear Susan, Not all crowned teeth need root canal treatment. If you have a crack in the tooth's crown, then restoring the tooth with a gold or white crown is OK. If the tooth is cracked in the root, a root canal may not help, and the tooth may be lost. Tooth fractures are often not seen on xray.