Regenerative Endodontic Procedure in an Immature Permanent Incisor with Internal Root Resorption: a Case Report

Abstract

This report describes a regenerative endodontic procedure of an immature permanent ncisor with internal root resorption (IRR) and 4-years follow-up. A healthy 8-year-old man was referred for treatment of tooth #9 after a traumatic intrusion. The periapical adiograph showed an IRR and an open apex with periradicular lesion. A diagnosis of pulp necrosis and chronic apical abscess was achieved. In the first appointment, under ocal anesthesia and rubber dam isolation, an access cavity was designed and the root canal was chemically cleaned under irrigation with 10 mL 1.5% sodium hypochlorite NaOCl). The root canal was then dried and calcium hydroxide paste was placed. During he second appointment, the root canal was irrigated with 5 mL of 17% ethylenedia- minetetraacetic acid (EDTA) for 5 minutes and dried. The blood clot was established in a ime of 3 minutes after the bleeding from the periapical tissue was trigged. White mineral rioxide aggregate (MTA) was placed up to the amelocemental junction and the final estoration of the access cavity was carried out. During periodic clinical and radiographic ollow-up, the patient remained symptom free, the periapical region was completely healed, inhibition of the root resorption process achieved, and formation of the new periodontal ligament as well as tooth widening development observed, meeting function- al expectations after 48 months. The regenerative endodontic procedures are an available option to treat IRR in severely immature teeth. The available literature on the regenera- ive endodontic procedures applied to IRR treatment is limited, and more research is needed in this field