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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 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.

Testimonials.

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Testimonials

Dr. Hekmat and all of his staff are gentle and friendly. They take the fear out of going to the dentist. He has done quality work on my teeth for the last three years and fixed problems I had from previous, poor quality dental work too! I am more than willing to drive 40 miles from where I live because I've never had such a great dental experience anywhere else!

Taylor w

Dr. Hekmat is absolutely wonderful, I couldn't imagine going to anyone else. He and his entire staff are caring and knowledgable; the quality of care is as good as it gets.
This is not your typical dentist experience. When I walk in today for my appointment, there was no check-in process- the assistant working at the front desk recognized me and told me the hygienist would be with me shortly (2 minutes later, right on time). They actually take the time to get to know their patients, which is especially comforting for those of us who get a little antsy when it comes time for a dental appointment.
The facility is top-notch. It's incredibly clean, TV in the lobby, and the chairs have massagers in the back so you can focus on something besides having your teeth cleaned. The pictures on their website might look too good to be true, but it's just genuinely that nice.
Dr. Hekmat and his staff are all phenomenal. They know what they're doing, take the time to explain what they're doing, and to answer questions. I would recommend Dr. Hekmat to anyone looking for a dentist or to change dentists, he's the best!

Chelsea S.

Dr. Hekmat's offices are so clean, soothing, and modern that it almost (ALMOST ... it's still the dentist!) feels like visiting the spa when you visit. I drive up all the way from the UTC area because I trust him and his staff with my teeth and my jittery nerves! They even take a photo of you at your first visit, so that when you come back, the receptionist greets you by name and already knows who you are - very welcoming, and a unique touch. Even the lighting is warm and relaxing, and the view from the chair is of a large, grassy pond filled with ducks.

Dr. Hekmat himself is friendly, calming, and talented. He replaced several silver filings with white filings for me - and he was really, really fast. Which was really appreciated by me, because I'm a big baby when it comes to the dentist. Several months later, and I'm silver-free and my filings have done great.

Ann M.

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