title: [Preliminary clinical application of Tip-Edge Plus appliance in the treatment of Class II patients].
abstract: OBJECTIVE
  To evaluate the craniofacial and occlusional changes of Class II patients treated with Tip-Edge Plus technique.
  
  
  METHODS
  Twelve Class II patients (7 girls and 5 boys, mean age 14.3 years) with bimaxillary or maxillary protrusion were selected. All the patients were four first premolar extraction cases and treated with Tip-Edge Plus technique. Cephalometric analysis was performed to evaluate the changes before and after treatment.
  
  
  RESULTS
  After treatment, the profile was greatly improved. UL-E, LL-E were decreased significantly (P < 0.01) and incisors were retracted (P < 0.05). Upper molars moved forward slightly (P > 0.05).
  
  
  CONCLUSIONS
  The anchorage control in Tip-Edge Plus technique was effective without extraoral force, palatal arch and implants. Under very light force, the crown of anterior teeth tipped distally and lingually quickly. In the final stage, it was possible to achieve both desired root uprighting and crown torque.
authors.affiliation: Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Chen
authors.forename: Tian-Min
authors.initials: TM
authors.lastname: Xu
authors.forename: Jiu-Xiang
authors.initials: JX
authors.lastname: Lin
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D018704:Orthodontic Retainers; D009971:Orthodontics, Corrective / Q000295:instrumentation / Q000379:methods