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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 is less than the initial treatment.

Root canal treatments and retreatments are an alternative to extraction. 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 may cost far more than working with the natural 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.

Testimonials.

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Testimonials

I have been a patient of Dr. Jeffrey Weiner since 1981. His work is impeccable. He is meticulous and results focused. He is not happy unless you are happy. I have referred many patients over the year to his office. His staff is always accommodating and friendly. I have had to call him and his son Dr. Jason Weiner on weekends and holidays over the years for a dental emergency and they have both responded to me quickly and with concern and advice. I receive compliments every day about my smile and it is because of Weiner Dental.

Mary P., Bensalem, PA

I know from experience that patients at Weiner Dental are very fortunate in knowing that "the apple doesn't fall far from the tree." Dr. Jason Weiner is my primary dentist. He is not only adept in the painless and creative cosmetic work that he has performed on me, his easy manner and confident professionalism allays any anxiety that I may have about any dental problems. Having also been treated by Jason's father, Dr. Jeffrey Weiner, it is evident that a caring attitude and a healing aptitude has been passed on from father to son. That same demeanor seems to be instilled in everyone at Weiner Dental. I sincerely recommend the doctors and staff at Weiner Dental. I believe that they really care.

Edward M., Huntingdon Valley, PA

I have been going to Doctor Weiner for 30 years along with my wife and children. He has always given us the best of care. I do not know t oo many doctors who care so much that they call you at home to check on you. He cares about all people. When Dr. Weiner heard we were going to visit our daughter (who is a missionary in Jaraboca, in the Dominican Republic), he sent dental supplies for the folks down there. Most of them do not have the money for toothbrushes and toothpaste. If you could have seen the look of joy on their faces...it's hard to describe. And his son Jason is following in his father's footsteps. I not only feel like I have a great dentist but a good friend! Thanks Docs.

Robert B., Philadelphia, PA

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