With the appropriate care, your teeth that have had endodontic treatment will last as long as other natural teeth. Occasionally, a tooth that has received endodontic treatment may fail to heal or pain may persist. Sometimes, the pain may occur months or years after treatment. If so, endodontic retreatment may be indicated.
Improper healing may be caused by:
- Curved or narrow canals were not treated during the initial treatment.
- Complicated canals went undetected during the initial treatment.
- procedural accidents such as broken instruments in the canal or root perforations.
- The crown or restoration was not placed within the appropriate amount of time following the procedure.
- The crown or restoration did not prevent saliva from contaminating the inside of the tooth.
- Persistent infection irrespective of the quality of the existing root canal treatment.