The teeth with immature apices pose a problem during obturation of root canal system. This article presents a case report of failed endodontic treatment in maxillary central incisor with open apex. The obturating material was removed from root canal system, root canal was cleaned, shaped and packed with calcium hydroxide and left for one week. In the second visit, root canal system was thoroughly irrigated with sodium hypochlorite and a 3–4 mm of MTA plug was placed at the apical terminus. The root canal system was sealed with thermoplasticized guttapercha. The access cavity was restored with coronal radicular composite restoration. Six months follow up demonstrated clinically asymptomatic and adequately functional tooth with radiographic signs of healing.
Apexification, MTA, blunderbuss apex
