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A member asked:
What could cause constant throbbing pain in a tooth that had a root canal and crown years ago?
4 doctors weighed in across 2 answers
Many things: Most likely to be an infection or a fracture. In the upper jaw a sinus infection can also be suspected to be the cause. Clinical exam and radiographic evaluation is advised. See your dentist.
Answered 5/18/2016
5.5k views
Failure: Unfortunately, even the best root canals and crowns eventually fail. Some may fail within months, while others may take decades. It is likely that your root canal is re-infected. If it is, a root canal re-treatment may be possible to save this tooth. Other possible causes are root fracture, gum infection, a problem with an adjacent tooth, or bite disbalance.
Answered 9/15/2016
5.4k views
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