title: Partial replacement of the dentin-pulp complex by periodontal supporting tissues in a traumatically intruded primary maxillary incisor.
abstract: This paper describes a case of a 9-year-old patient who presented a completely intruded primary maxillary incisor because of a traumatic injury sustained at the age of 3 years. After tooth extraction, histological analysis revealed that the dentin-pulp complex was partially replaced by cementum, periodontal ligament and alveolar bone. No signs of ankylosis were noticed. It is suggested that the lack of spontaneous re-eruption of the traumatized primary tooth after 6 years could be due to the development of functional periodontal supporting tissues in the pulp chamber secondary to the traumatism.
authors.affiliation: Department of Pediatric Clinics, Preventive and Social Dentistry, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil. nelson@forp.usp.br
authors.forename: Paulo
authors.initials: P
authors.lastname: Nelson-Filho
authors.forename: Maria Cristina
authors.initials: MC
authors.lastname: Borsatto
authors.forename: Paulo Tambasco
authors.initials: PT
authors.lastname: de Oliveira
authors.forename: Raquel Assed Bezerra
authors.initials: RA
authors.lastname: da Silva
mesh_terms: D000539:Alveolar Process / Q000473:pathology; D002648:Child; D003739:Dental Cementum / Q000473:pathology; D003782:Dental Pulp / Q000293:injuries*; D003804:Dentin / Q000293:injuries; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries*; D008437:Maxilla; D010510:Periodontal Diseases / Q000209:etiology*; D010513:Periodontal Ligament / Q000473:pathology; D014084:Tooth Avulsion / Q000150:complications* / Q000601:surgery; D014094:Tooth, Deciduous / Q000293:injuries*