title: Autotransplantation of premolars to replace maxillary incisors: a comparison with natural incisors.
abstract: The published literature contains no comprehensive studies that compare the outcome of premolar autotransplantation to the maxillary anterior region with natural incisors in the same patients. This article describes the gingival and periodontal conditions around premolars transplanted to the maxillary incisor region, subsequent to restoration. Forty-five premolars autotransplanted to the maxillary incisor region in 40 adolescent patients were evaluated after a mean observation period of 4.0 years. Mean age at surgery was 11.0 years. Established clinical criteria were used to assess tooth mobility, plaque and gingival indexes, probing pocket depth, and percussion. Recession and hyperplasia of interproximal gingival papillae were assessed according to a recently proposed index. Standardized radiography was used to evaluate presence of pathosis, pulp obliteration, root length, and crown-root ratios. Clinical variables for transplants did not differ from those of the natural incisors, except for increased mobility and more plaque in a few transplanted premolars. The interproximal gingival papillae adjacent to all transplanted teeth were normal or slightly hyperplastic. Radiographically, all transplants showed varying degrees of pulp obliteration, but no signs of pathosis. Crown-root ratios were similar for natural and transplanted teeth as were distances from cementoenamel junction to marginal bone. The overall status of the transplanted premolars and surrounding tissues indicated that this treatment modality may be recommended when maxillary incisors are missing in adolescents. In addition, tooth transplantation represents an inherent potential for bone induction and reestablishment of a normal alveolar process.
authors: Department of Orthodontics and the Department of Oral Surgery and Oral Medicine, University of Oslo, Norway.
authors: E M
authors: EM
authors: Czochrowska
authors: A
authors: A
authors: Stenvik
authors: B
authors: B
authors: Album
authors: B U
authors: BU
authors: Zachrisson
mesh_terms: D000293:Adolescent; D000848:Anodontia / Q000601:surgery; D001641:Bicuspid / Q000637:transplantation*; D002648:Child; D003773:Dental Plaque / Q000209:etiology; D003790:Dental Pulp Necrosis / Q000209:etiology; D005500:Follow-Up Studies; D005881:Gingiva / Q000473:pathology; D005889:Gingival Recession / Q000209:etiology; D006801:Humans; D006965:Hyperplasia; D007180:Incisor / Q000002:abnormalities / Q000293:injuries / Q000502:physiology*; D008437:Maxilla; D019647:Oral Surgical Procedures / Q000009:adverse effects; D012189:Retrospective Studies; D014084:Tooth Avulsion / Q000601:surgery; D019228:Tooth Crown / Q000033:anatomy & histology; D014086:Tooth Mobility / Q000209:etiology; D014092:Tooth Root / Q000033:anatomy & histology; D014182:Transplantation, Autologous / Q000009:adverse effects; D016896:Treatment Outcome