While most root canal treatments are successful, occasionally a tooth may not heal as expected or a new infection may develop months or years later. This can happen if the original canals were very narrow or curved, or if the final restoration did not prevent saliva from leaking back into the tooth. In these cases, a procedure called retreatment may be necessary to save the tooth for a second time.
During retreatment, the dentist or an endodontist re-opens the tooth to gain access to the root canal filling material. This material is carefully removed, and the canals are thoroughly cleaned and re-examined for any previously undetected channels or signs of infection. The goal is to identify and eliminate the cause of the failure, ensuring the internal space is completely sterile before sealing it again.
New problems can also cause a treated tooth to fail, such as new decay or a cracked crown that exposes the filling material to bacteria. In India, changes in oral hygiene or the development of gum disease can also impact the stability of a root-treated tooth. Retreatment addresses these issues by providing a fresh start for the tooth’s internal health, often combined with a new, better-fitting crown.
Choosing retreatment is often preferable to extraction, as it allows you to retain your natural tooth. The procedure is very similar to the initial root canal, usually performed under local anaesthesia to ensure comfort. If you notice pain, swelling, or a strange taste near a tooth that was treated years ago, you should consult a registered dentist to see if retreatment is an option for you.