title: [Pre- and post-surgical orthodontic treatment of mandibular asymmetry and prognathism].
abstract: OBJECTIVE
  The purpose of this study was to analyze the pre- and post surgical orthodontic treatment of mandibular asymmetry and prognathism in our hospital, and to summarize some helpful experiences for future clinical work.
  
  
  METHODS
  The data were derived from 21 adults aged from 19 - 28 years who had severe mandibular asymmetry and prognathism. The ANB angle of all patients is from -3 degrees to -8 degrees. The value of wits of all patients is from -7 mm to -14 mm. The deviation of chin point of all patients is from 3 mm to 7 mm.
  
  
  RESULTS
  The duration of pre- and post-surgical orthodontic treatment was 10-20 months (mean 18 months) and 5-10 months (mean 7.5 months), respectively. The keys in pre-surgical orthodontic treatment include (1) three dimensional dental decompensation; (2) arch form and transverse discrepancy correction; (3) model surgery and the splint making. The main objective of post surgical orthodontic treatment is to detail the occlusion.
  
  
  CONCLUSIONS
  Pre- and post surgical orthodontic treatment is essential for the orthognathic treatment of patients with mandibular asymmetry and prognathism.
authors.affiliation: Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China. songchen882002@hotmail.com
authors.forename: Song
authors.initials: S
authors.lastname: Chen
authors.forename: Yang-xi
authors.initials: YX
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Hu
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007569:Jaw Abnormalities / Q000601:surgery*; D008297:Male; D008334:Mandible / Q000002:abnormalities*; D009971:Orthodontics, Corrective; D011182:Postoperative Care; D011300:Preoperative Care; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult