title: Treatment efficiency in skeletal Class II patients treated with the jasper jumper.
abstract: OBJECTIVE
  To analyze the effects of the Jasper Jumper appliance during the treatment of skeletal Class II malocclusion.
  
  
  METHODS
  Lateral cephalograms and hand-wrist radiographs were collected from 45 Class II growing patients (22 boys, 23 girls). Three sets of records (initial, before Jasper Jumper, after Jasper Jumper) from 25 patients were compared with 20 control subjects of similar skeletal developmental stage. Mean age of the treatment and control groups were 11.83 years and 11.3 years, respectively. The data were analyzed by using paired t-tests.
  
  
  RESULTS
  The results demonstrated that the Jasper Jumper effectively corrected Class II malocclusion, but the changes were 80% dentoalveolar. The Jasper Jumper induced a clockwise rotation of the occlusal plane without much alteration in vertical dimension. Skeletally, the maxillary growth was restricted and pogonion moved forward, improving the profile.
  
  
  CONCLUSIONS
  The Jasper Jumper appliance may be an effective method to improve both the skeletal imbalance and the profile in growing patients.
authors.affiliation: Department of Orthodontics, Marmara University, Güzelbahce sokak no:6, stanbul, 34365, Turkey.
authors.forename: Nazan
authors.initials: N
authors.lastname: Küçükkeleş
authors.forename: Işil
authors.initials: I
authors.lastname: Ilhan
authors.forename: I Ata
authors.initials: IA
authors.lastname: Orgun
mesh_terms: D000202:Activator Appliances; D000365:Age Determination by Skeleton / Q000379:methods; D016022:Case-Control Studies; D002508:Cephalometry; D002648:Child; D005260:Female; D006225:Hand / Q000000981:diagnostic imaging; D006257:Head / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D016382:Orthodontic Appliance Design; D009971:Orthodontics, Corrective / Q000295:instrumentation* / Q000379:methods; D014716:Vertical Dimension; D014953:Wrist / Q000000981:diagnostic imaging