title: [The effects of combined reverse Nance and TPA on reinforcement of anchorage].
abstract: OBJECTIVE
  To evaluate the effects of combined reverse Nance and TPA on anchorage control.
  
  
  METHODS
  16 female adults with Class II division 1 malocclusion were treated with the combined mechanism of reverse Nance and TPA in an attempt to reinforce molar anchorage. Cephalometric analysis and model measurements were conducted for the assessment of anchorage control.
  
  
  RESULTS
  The mesial movement of the upper first molars were minimized within 1/5 extracted space, parameters such as UMVD, MP-FH, ANS-Me remained unchanged, indicating the molar anchorage was controlled effectively.
  
  
  CONCLUSIONS
  The modified combination of reverse Nance and TPA might be effective in anchorage forcement.
authors.affiliation: Department of Orthodontics, Ninth People's Hospital, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Rong-Jing
authors.initials: RJ
authors.lastname: Chen
authors.forename: Gang
authors.initials: G
authors.lastname: Shen
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000000981:diagnostic imaging / Q000628:therapy*; D008963:Molar / Q000000981:diagnostic imaging; D009969:Orthodontic Wires; D009971:Orthodontics, Corrective / Q000379:methods*; D011859:Radiography