Question 1

Is redoing a root canal worth it?

Accepted Answer

Usually yes — saving your natural tooth is generally preferable to extraction and replacement, and retreatment has a high success rate, especially when a missed canal is found and treated. Your specialist will use CBCT to confirm the tooth is genuinely savable before recommending it.

Question 2

How successful is root canal retreatment?

Accepted Answer

Retreatment is highly successful, particularly when the original failure was due to a missed canal that can now be found and cleaned under a microscope. Success is lower when the cause is a vertical root fracture — which is why a specialist evaluates the real cause first with CBCT.

Question 3

Is retreatment more painful than the first root canal?

Accepted Answer

No — it's done with the same profound local anesthesia and is typically no more uncomfortable than the original treatment. Retreatment takes a bit longer because the old filling material must be removed, but your comfort during the procedure is the same.

Question 4

What if retreatment doesn't work either?

Accepted Answer

There's still a path: an apicoectomy can seal the root tip from the outside when retreatment can't resolve the infection. Extraction is only the last resort, reserved for teeth that are fractured or no longer restorable.

Question 5

Can any dentist redo a root canal?

Accepted Answer

Retreatment is more complex than a first-time root canal and is best done by a specialist endodontist with a microscope and CBCT. Removing prior filling material, finding missed canals, and managing posts demand specialist tools and experience for the best chance of saving the tooth.

Can a Failed Root Canal Be Redone? · Retreatment Options · Sunnyvale Endodontist