title: Orthodontic extrusion: an interdisciplinary approach to patient management.
abstract: Root fractures that occur at the cervical margin do not always heal predictably, even following a period of splinting. This often leaves margins either sub-gingival or sub-crestal. This provides an unsatisfactory situation for restoring the remaining root as restorations will impinge on the biological width. Provided a root is long enough to support a post crown, then orthodontic extrusion to provide sufficient supra-gingival tooth tissue is a useful treatment option to consider. A review of the literature on orthodontic extrusion is considered in conjunction with a case report of the management of a young male who fractured a canine and lateral incisor whilst playing cricket.
  
  
  CONCLUSIONS
  Trauma to upper anterior teeth is frequently seen in practice. One treatment option in the management of sub-crestal cervical root fractures is orthodontic extrusion, rather than removal of the tooth.
authors.affiliation: Cardiff University School of Dentistry, Heath Park, Cardiff, UK.
authors.forename: Liam D
authors.initials: LD
authors.lastname: Addy
authors.forename: Peter
authors.initials: P
authors.lastname: Durning
authors.forename: Matthew B M
authors.initials: MB
authors.lastname: Thomas
authors.forename: William S
authors.initials: WS
authors.lastname: McLaughlin
mesh_terms: D016556:Crown Lengthening; D003442:Crowns; D003481:Cuspid / Q000293:injuries; D006801:Humans; D007180:Incisor / Q000293:injuries; D008297:Male; D008437:Maxilla; D050793:Orthodontic Extrusion; D010348:Patient Care Team; D014082:Tooth Fractures / Q000628:therapy*; D014092:Tooth Root / Q000293:injuries; D055815:Young Adult