Root canal RETreatment
Occasionally, a root canal–treated tooth may not heal completely or can become re-infected due to persistent bacteria, a leaking restoration, recurrent decay, or a crack in the tooth. In these cases, root canal retreatment may be recommended. Retreatment involves removing the previous filling material, thoroughly disinfecting the canals, addressing any missed anatomy or sources of infection, and resealing the root canal system. This procedure can often eliminate infection, promote healing, and preserve the natural tooth for many years.
Sometimes, a tooth that has had root canal treatment may not heal properly and another treatment is needed. Watch this video to understand how root canal retreatment can save your tooth and learn more about the endodontists who specialize in this dental procedure.
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The first step is to profoundly numb the tooth, which is achieved by placing a local anesthetic into the gum next to the tooth. After the tooth is numb, a rubber dam barrier is placed around the tooth to provide protection to the patient and also ensure the tooth stays clean throughout the procedure.
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Following the numbing and isolation of the tooth, the tooth is accessed to get to the root canals. Old fillings or decay is may be removed during this process.
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Once the canals are identified within the tooth, the original root filling material is removed. Any possible untreated canals are also identified. The canals are then cleaned, shaped, and disinfected using small instruments and disinfectant solutions.
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After the canals are fully cleaned and shaped, a filling material called gutta percha is placed into each canal to provide a seal. The access is then closed with either a temporary or permanent filling. If a temporary filling was placed, the patient will return to their dentist for a permanent filling.
How is a retreatment performed?
After treatment
It is normal to have some mild tenderness or soreness for a few days after root canal treatment. This usually improves gradually as the area heals. Avoid chewing on the treated tooth until the numbness has completely worn off, and be sure to follow your dentist’s recommendations for the final restoration of the tooth. If you develop significant swelling, severe or increasing pain, or notice that your bite feels uneven, please contact our office so we can help.
Follow-Up
If infection or inflammation was present around the root of the tooth, the surrounding bone and tissues will need time to heal after root canal treatment. This healing process occurs gradually and may take several months or longer. Follow-up X-rays may be recommended to confirm that the area is healing as expected.