Sometimes it is necessary to "retreat" or "revise" a root canal because of infection after initial treatment. Many cases are caused by incomplete prior root canal therapy, complicated canal anatomy or contamination with oral bacteria through a leaking restoration.
Our team is experienced in retreatment procedures, and can usually return your tooth and surrounding tissues to health.
Once we perform an examination, treatment options will be explained. Then we will reopen your tooth and remove the previous root canal filling materials. We will then carefully reclean the canals and evaluate your tooth using a special operating microscope along with digital radiography.
Once your tooth has been cleaned and shaped, we will place filling materials into the canals to seal the root canal system.
Research by Gorni and Gagliani* stated that the overall success for revision therapy was 69.03%; the success in the root-canal-morphology-respected group was 86.8% (where the natural course of the root canals was maintained) and in the root-canal-morphology-altered group 47% (where the canal path was changed by the prior treatment). The clinical success of an endodontic retreatment depends on whether alterations in the natural course of the root canals were caused by previous root-canal treatment.
Postoperatively, your general dentist will place a new restoration or repair your current restoration. Possible complications from this procedure are similar to those in the original endodontic procedure, however, the success rate for revision procedures is generally lower.
* Gorni FGM, Gagliani MM: The outcome of endodontic retreatment: A 2-yr follow-up. Journal of Endodontics, 30(1):1-4, 2004.
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