title: Prospective, multi-center study of the effectiveness of orthodontic/orthognathic surgery care in the United Kingdom.
abstract: BACKGROUND
  The aim of this study was to evaluate the effectiveness of orthodontic/orthognathic surgical care provided in the North West region of England. It was an observational, prospective cohort study at 13 maxillofacial clinics in the United Kingdom.
  
  
  METHODS
  The 131 patients comprised 47 males (35.9%) and 84 females (64.1%), with an average age of 22.6 years. They received orthodontic/orthognathic treatment according to the normal protocols of the operators. They were then followed until all orthodontic treatment was completed. Final skeletal pattern, final peer assessment rating score, number of attendances, and duration of treatment were recorded.
  
  
  RESULTS
  At the end of the 5-year study, 94 patients had completed treatment, and 71 had complete data. Data analysis showed that, overall, the treatments provided were effective in terms of skeletal and dental occlusal outcomes; the final mean peer assessment rating score was 10.58. However, treatment duration was longer than commonly expected, with a mean length of 32.8 months (SD,11.3). The outcome of treatment was influenced by only pretreatment skeletal discrepancy.
  
  
  CONCLUSIONS
  This prospective investigation showed that orthodontic/orthognathic surgical care was effective. The outcome of treatment was influenced only by the severity of the pretreatment skeletal discrepancy.
authors.affiliation: School of Dentistry, University of Manchester, Manchester, United Kingdom. Kevin.OBrien@manchester.ac.uk
authors.forename: Kevin
authors.initials: K
authors.lastname: O'Brien
authors.forename: Jean
authors.initials: J
authors.lastname: Wright
authors.forename: Frances
authors.initials: F
authors.lastname: Conboy
authors.forename: Priscilla
authors.initials: P
authors.lastname: Appelbe
authors.forename: David
authors.initials: D
authors.lastname: Bearn
authors.forename: Susan
authors.initials: S
authors.lastname: Caldwell
authors.forename: Jayne
authors.initials: J
authors.lastname: Harrison
authors.forename: Jamil
authors.initials: J
authors.lastname: Hussain
authors.forename: David
authors.initials: D
authors.lastname: Lewis
authors.forename: Simon
authors.initials: S
authors.lastname: Littlewood
authors.forename: Nicola
authors.initials: N
authors.lastname: Mandall
authors.forename: Tim
authors.initials: T
authors.lastname: Morris
authors.forename: Alison
authors.initials: A
authors.lastname: Murray
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Oskouei
authors.forename: Stephen
authors.initials: S
authors.lastname: Rudge
authors.forename: Jonathan
authors.initials: J
authors.lastname: Sandler
authors.forename: Badri
authors.initials: B
authors.lastname: Thiruvenkatachari
authors.forename: Tanya
authors.initials: T
authors.lastname: Walsh
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Turbill
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002508:Cephalometry; D015331:Cohort Studies; D004739:England; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000145:classification / Q000601:surgery* / Q000628:therapy; D008334:Mandible / Q000473:pathology; D008437:Maxilla / Q000473:pathology; D008875:Middle Aged; D019647:Oral Surgical Procedures / Q000706:statistics & numerical data*; D009971:Orthodontics, Corrective / Q000706:statistics & numerical data*; D010027:Osteotomy / Q000379:methods; D010349:Patient Compliance; D018024:Peer Review, Health Care; D011446:Prospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D006113:United Kingdom; D055815:Young Adult