A tooth that had a root canal years ago starts aching when you bite down. You book an appointment, expecting a filling or a new crown, and hear a less familiar term: retreatment. It can sound as if the first treatment failed and the tooth is doomed, but neither conclusion follows from the word alone.
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Root Canal Retreatment Infection: Key Signs & Care
About 39% of previously treated teeth show some sign of persistent apical disease on imaging, but most can be resolved with retreatment when the cause is identified early. A previously treated tooth may feel normal while inflammation remains around its root, so the right next step is diagnosis, not an automatic prescription, repeat procedure, or
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