Root Canal Retreatment

In rare cases, root canal therapy fails to work as expected. The treated tooth might not heal properly or a patient might experience post-surgical complications that jeopardize the tooth. Root canal retreatment involves the removal of the previous crown and packing material, the cleansing of the root canals, and the re-packing and re-crowning of the tooth. In short, root canal retreatment is almost identical to the original procedure, aside from the structural removal. The success rate for a root canal retreatment runs at around 75%.

Root canal treatments and retreatments are a better alternative than extraction for most individuals. If a tooth has good bone support, a solid surface and healthy gums beneath it, it stands a good chance of being saved. Opting for root canal retreatment can be far less expensive than the alternatives. Dental implants, extensive bridgework and the creation of aesthetically pleasing prosthetic teeth cost far more than working with the natural tooth. They also require maintenance and feel less natural than a “real” tooth.

Why is root canal retreatment required?

Though the prospect of more endodontic surgery might not be pleasant, root canal retreatment is fairly simple. In general, the whole treatment can be completed in 1-3 visits.

There are a number of reasons why root canal therapy unexpectedly fails, including:

  • Cracked crown leaking filling material.
  • Curved or narrow canals not treated during the original procedure.
  • Delay in the placement of restorative devices following the procedure.
  • New decay to the tooth.
  • New fracture in the treated tooth.
  • Saliva entering the restorative structure.
  • Undetected complex canal structures.

What does root canal retreatment involve?

On the day of the retreatment procedure a local anesthetic will be administered, unless another type of anesthetic has been selected. The affected tooth is isolated with a rubber dam. The dam protects the tooth during treatment from bacteria and saliva. The amount the dentist can do within a single appointment will much depend on the amount of inflammation present, and the complexity of the treatment.

The first step in a root canal retreatment is to gain access to the inner tooth. If a crown and post have been placed, these will be removed.

Next, filling material and obstructions that block the root canals will be removed. This removal is conducted using an ultrasonic handpiece. The advantage of using this tool is that any unwanted material is vibrated loose. Tiny instruments will then be used to clean and reshape the root canals. X-rays may be taken to ensure that the roots are thoroughly clean. If this part of the treatment proves to be complex, medicated packing material will be applied, and the rest of the cleansing procedure will be done at the next visit.

When the dentist is confident that the root canals are completely clean, gutta-percha is used to pack the space. This rubbery material seals the canals to prevent bacterial invasion. Finally, a temporary crown or filling is applied to tooth. At a later date, the color-matched permanent crown will be placed.

If you have any questions or concerns about root canal retreatment, please ask your dentist Dr. Kamyar Hekmat DDS at our Downtown Los Angeles or Westwood dental offices.

Testimonials.

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Testimonials

Dr. Hekmat's chairside manner is something that should be cloned, and all young dentists and doctors should be able to see the tender insight that this man gives his patients. Dr. Hekmat is one of the nicest, most skillful, most dedicated men I have ever met. I can't believe I was so lucky to have found him in such a huge, busy metropolis as Los Angeles.

John Burbank, CA

Dr. Hekmat has been my trusted family dentist for many years, not only taking care of me--but my wife, sister, mother, brother-in-law and mother-in-law, too! From the warm smiles that greet me when I walk in the door to the compassionate, skillful and concerned care that Dr. Hekmat and his staff provide, my visits to his office are always like visiting a member of the family. ...And I don’t want to forget to mention that I appreciate the fact that in busy Westwood, Dr. Hekmat still provides completely free, validated parking. That’s no small feat in my part of town!

Louis Santa Monica, CA

Dr. Hekmat and his team are true professionals. He is kind and always has time to answer ALL of my questions and concerns. I began visiting him after a a friend referred to me several years ago and I have not visited any other dentists since getting work done with him because he continuously provides me and my family with excellent work. I have had a root canal, crowns, bonding, whitening and removal of amalgam fillings with him and I could not be happier with his work.

He is also totally available for emergencies, something other doctors shirk at. I was on my way to LAX when my front tooth (it was being prepped for a root canal) totally came off, I panicked, called him and drove myself to his office within a hour he had me all patched up.

He never tries to sell you anything, he and his staff know my name and always make me feel welcome and calm the anxiety that comes with getting dental work done.

Lizzie West Los Angeles, CA

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