Retreatment of previous root canal therapy

Retreatment is considered the primary procedural option when the tooth exhibits inadequate initial root canal treatment, has palpation and percussion sensitivity, localized swelling, recurrent caries, leaky provisional restorations, and substandard or missing coronal restorations.

Can Root Canal Treatment Be Repeated?

Although a dentist can do a second or third root canal treatment—or more—on a tooth, the results are unpredictable. Even the most skilled dentists can perform root canal treatment that fails. Studies show that root canal treatment has an 86 – 98% success rate.