Why Retreat a Root Canal?
If you suspect a tooth treated with a root canal procedure may need retreatment, it’s important to make an appointment with us for a thorough evaluation. Several factors can influence the healing process, including:
- Narrow or curved canals that were missed during the initial procedure.
- Complex canal anatomy that was undetected.
- Delays in placing the crown or restoration after treatment.
- Contamination from saliva during the restoration.
Even after successful treatment, new issues can arise that affect the tooth, including:
- New decay, which can expose the root canal filling to bacteria and lead to reinfection.
- A loose, cracked, or broken crown or filling that exposes the tooth to bacteria.
- A fractured tooth.
During retreatment, we will reopen the tooth, remove the old root canal filling material, and carefully examine the tooth for any missed canals or signs of a new infection. Then we will thoroughly clean and shape the canals and place new filling materials. The tooth will be temporarily sealed until a permanent restoration can be placed.
Examination
As with a root canal, we’ll begin by discussing your symptoms and any reinfection or other concerns your dentist has noted. After examining the tooth and taking X-rays, we’ll make an accurate diagnosis.
Preparation
To ensure your comfort, we’ll administer a local anesthetic — even though the nerve has been removed, numbing is still necessary because we’ll be working near the periodontal ligament at the root tips. Next, we’ll place a small rubber sheet (called a dental dam) over the area to keep the tooth clean and dry during the procedure.
Removal & Shaping
We’ll make an opening in the crown of the tooth and carefully remove the old filling material while preserving the tooth’s structure. Once we locate the canals, we’ll check for any additional ones that may need treatment. We’ll thoroughly remove all the old filling material, which may take some time depending on the materials used. Posts may also be present in the roots, which will need to be addressed. Using specialized tools and disinfectants, we’ll clean and shape the canals to prepare them for the next step.
Filling
Once the canals are cleaned and shaped, we’ll fill them with a material called gutta-percha and seal it with adhesive cement. A temporary filling will typically be placed to close the opening. For more detailed information, visit the American Association of Endodontists.
Ease Your Pain and Save Your Teeth
Contact Central Minnesota Endodontics to ensure you receive high-quality treatment and restorative care you need. Your teeth will thank you!