The persistent and secondary intraradicular infections are the primary causes of post-treatment disease following endodontic treatment of any tooth. When conventional root canal treatment fails, endodontic retreatment is often the preferred option, as it represents one of the most conservative approaches.
Endodontic retreatment involves removing old root canal filling material followed by cleaning, shaping, and refilling the canals. It may be associated with postoperative pain due to periapical tissue irritation and apical extrusion of debris during instrumentation.
Patients with mature teeth.
Patients with failed previous Endo treatment related by periapical periodontitis
Single Rooted with single root canal.
Patients should be free from any systemic disease that may affect predictable outcome.
Patients with immature roots.
Patients with any systemic disease that may affect normal healing.
Patients with swelling.
Pregnant females.