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.

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Testimonials

Dr. Baltazar has been our family dentist for more than 20 years. In all that time, we have received only the absolute best quality care and treatment. His credentials, expertise and reputation are all impeccable.
Whether the treatment plan is simple or complex, he has always taken as much time as necessary to make sure we understand exactly what is to be done and why. We never feel like we're being rushed or being confused by complex technical jargon. One of my fears used to The Needle, but I am still continually amazed by his precise, gentle and deft administration of anesthesia. I actually sort of look forward to it!
His assistants and staff deserve praise, too. Both the front office staff and his technicians are always considerate, cheerful but also knowledgeable. Long-time office manager Cecilia has always been so helpful and friendly to us that we practically regard her as another family member.
Just as we came to Dr. Baltazar's practice by way of an enthusiastic recommendation from a trusted friend, we would not hesitate to recommend him to anyone looking for the best dentist in town.

Tim Scott and Linda Fetch

Dr. B.~ You have set a high bar of expectations for any dentist who treats me to attempt to reach. I cannot thank you enough for all of the outstanding care you have provided to me over these last few years. May the Lord bless you in the next 30 (or however many) years of your practice! With fond gratitude,

Margaret Lowing

You'll not find a more caring, personal dentist around! I've been going to him for over 10 years. My two young daughters even requested to go to him OVER their previous childhood dentist (who had video games and movies playing at all times) which says alot! Dr. Baltazar is a dentist you can trust with yourself and your family!

Christineh

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