Apical Extrusion In Endodontics: An Evidence-Based Review of Debris, Irrigants, Medicaments, and Obturation Materials

Apical extrusion is the unintended displacement of materials beyond the apical foramen during endodontic treatment. It may occur during instrumentation, irrigation, intracanal medicament placement, and obturation, involving dentinal debris, microorganisms, irrigants, medicaments, sealers, or gutta-percha. Extrusion can cause periapical inflammation, postoperative pain, delayed healing, and tissue injury. Sodium hypochlorite extrusion may result in severe chemical tissue damage. The risk is influenced by working length, apical anatomy, instrumentation technique, irrigation pressure, and obturation procedures. Accurate working length determination, controlled instrumentation, gentle irrigation, proper apical preparation, and careful obturation are essential preventive measures. Management depends on the material and severity of extrusion, ranging from observation to retreatment or surgical intervention. Understanding and minimizing apical extrusion is essential for predictable endodontic outcomes and periapical healing.