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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

If you want to know what I think of Dr. Afzali and her staff all you really need to know is that I live in Portland and I fly to San Diego to see Dr. Afzali for all my dental work. That might seem a bit extreme, and perhaps it is, but hear me out before you decide. A couple of years ago when I was living in the Bay Area I had to have one of my front teeth removed and dental implant inserted in its place by a dentist in the Bay Area. The implant looked a little shorter and darker than my other teeth, and even made my gum above it look a bit darker than the adjacent gum. In short, it didn't look natural. So I wasn't completely satisfied with how my smile looked, but I thought that was the best that could be done. It wasn't.

Last summer while I was in San Diego visiting my parents I went to Dr. Afzali for a routine cleaning. She examined my mouth and immediately asked me whether I was happy with the way my implant looked. When I said I wasn't, she explained that she could make it look better and possibly even indistinguishable from my other teeth. She was right. My implant looks just like my other teeth, and my gum is pink again. In fact, my new implant looks so natural that I sometimes forget it's an implant. I couldn't be happier. One final point. Dr. Afazli's entire staff is great. When I walk in they all make me feel like I'm the most important patient they have. And Julie is particularly great. Because I live in Portland my visits to Dr. Afzali's office had to me perfectly timed with receipt of the various parts necessary for my procedures. Julie made sure that everything arrived when necessary, without fail, so that no flights or appointments had to be rescheduled.

Riley P.

Recently, while on a trip from Canada to visit friends in San Diego, I broke a tooth. I phoned RB Dentistry and was given an appointment without delay. Dr. Mary Afzali was reassuring and professional and did an excellent job fixing the broken tooth. Her dental assistant, Marinette, was kind and gentle and made me feel comfortable throughout the procedure. Julie at Reception was welcoming, warm and made me laugh with her wonderful sense of humour and handled the insurance processing with no complications. Thank you so much Dr. Afzali, Mari and Julie for one of the most pleasant dental appointments I've had in a long time! Hope to see you in Vancouver, B.C. sometime!

Pam C.

I know I am in good hands with Dr. Afzali at RB Family Dentistry. The cavity fillings and tooth root fillings I got there were done so well that when I went to the Southwest College Dental Hygenist school to help out a friend, they could barely even detect the fillings! The teachers there were very impressed. At RB Family Dentistry, the staff and hygenists are friendly, organized and very knowledgable, and the Dr. always gives me as much time as I need and answers all of my questions. The office is beautiful and state-of-the-art. They never try to sell me on additional products or services that I don't need.

Scripps Ranch M

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RB Family & Cosmetic Dentistry
16776 Bernardo Center Dr. #105 San Diego, CA 92128
Phone: (858) 485-0044 URL of Map