With proper care, teeth that have undergone endodontic treatment by an endodontist can last as long as your natural teeth. However, in some cases, a tooth may not fully heal, or pain may persist even after treatment. This discomfort can sometimes arise months or even years later. When this happens, endodontic retreatment may be necessary to address the issue and restore the health of the tooth. Retreatment involves carefully removing the previous filling material, thoroughly cleaning and disinfecting the area, and re-sealing the tooth to ensure lasting relief and optimal function.