With the right care, your teeth that have had endodontic treatment will last as long as natural teeth. But a tooth that has received treatment might not heal completely or pain may continue. If so, Endodontic Retreatment may be needed to save your tooth.
Improper healing may be caused by:
- Curved or narrow canals were not treated during the treatment.
- Complicated canals went undetected during the first treatment.
- The crown or restoration was not placed within the appropriate amount of time following the procedure.
- The crown or restoration did not seal the root canal and protect the contamination of saliva.
In some cases, new problems can affect a tooth that was successfully treated:
- New decay can expose a root canal filling material, causing infection.
- A cracked or loose filling or crown can expose the tooth to new infection.
If retreatment is deemed necessary, the tooth will be re-accessed to locate existing fill material. This material will be removed, and canals re-instrumented and cleansed. Calcium hydroxide (as medication) is placed in the canal space for a period of one to two weeks. This is done to allow time for the tooth to "settle down.” At the follow-up visit, the medicament will be removed, canals cleaned and refilled with gutta percha, and permanent restoration.