SUMMARYThe patient H. V.. a rjoy aged 12, fractured the maxillary right central incisor, two days previously.The clinical investigation showed that the maxillary right central incisor presented fractured enamel and dentin but the pulp was not exposed.Roentgenograms revealed that the root and the periapical tissues were intact.In the first examination, the pulp was vital. A cavity was prepared; the exposed dentine was protected with calcium hydroxide covered by Zinc oxid'e-eugenol paste. The patient was asked for-fortnight, but he did not come. He come for examination after eight months. He had an abscess originating from the maxillary right central incisor.The pulp cavity was widely opened in the line of the root canal, the necrotic pulp contents were removed and the canal walls cleaned with reamers. Conservative treatment was carried out according to accepted endodontic principles. The root canal was filled with iodoform paste overfilllngs, and gutta percha points.