title: Scanning electron microscopy and histologic analysis of an apexification "cap": a case report.
abstract: A maxillary permanent central incisor with a history of trauma, apexification, and internal thermocatalytic bleaching sustained a horizontal fracture at the cementoenamel junction, which necessitated extraction of the tooth. After removal, the root apex was examined histologically and by scanning electron microscopy. An apexification "cap" with unusual anatomic character and structure was observed.
authors.affiliation: University of Iowa Dental College, Department of Endodontics S435, Iowa City 52240, USA.
authors.forename: L A
authors.initials: LA
authors.lastname: Baldassari-Cruz
authors.forename: R E
authors.initials: RE
authors.lastname: Walton
authors.forename: W T
authors.initials: WT
authors.lastname: Johnson
mesh_terms: D000328:Adult; D002113:Calcification, Physiologic; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries; D008437:Maxilla; D008855:Microscopy, Electron, Scanning; D019227:Tooth Apex / Q000502:physiology* / Q000648:ultrastructure; D014082:Tooth Fractures / Q000503:physiopathology*; D014092:Tooth Root / Q000293:injuries*