title: [The influence on masticatory function after curved osteotomy of prominent mandibular angle].
abstract: OBJECTIVE
  To investigate the influence of mandibular curved osteotomy on masticatory function by analyzing the bite force before and after operation.
  
  
  METHODS
  From Jan. to Oct. 2008, 20 female cases underwent mandibular curved osteotomy. The maximal bite force in incisor area, bilateral premolar area and molar area was measured before operation and 6 months after operation.
  
  
  RESULTS
  The maximal bite force in incisor area, right premolar area, left premolar area, right molar area, left molar area was (11.7 +/- 3.9) kg, (23.2 +/- 1.6) kg, (30.9 +/- 2.3) kg, (35.6 +/- 4.2) kg, (38.5 +/- 3.1) kg, respectively before operation; and was (11.9 +/- 2.1) kg, (23.0 +/- 4.5) kg (31.0 +/- 1.8) kg,(35.9 +/- 3. 5) kg. (38.5 +/- 2.7) kg, respectively 6 months after operation. The postoperative maximal bite force reached the preoperative level, and even slightly above it. There was no significant difference between the measured data before operation and 6 months afterward (P > 0.05).
  
  
  CONCLUSIONS
  The curved osteotomy of prominent mandibular angle has no long-term effect on masticatory function.
authors.affiliation: Cranimaxillofacial Center, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100144, China.
authors.forename: Wu-yuan
authors.initials: WY
authors.lastname: Tan
authors.forename: Shuang
authors.initials: S
authors.lastname: Qiu
authors.forename: Meng
authors.initials: M
authors.lastname: Wang
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Feng
authors.initials: F
authors.lastname: Niu
authors.forename: Bing
authors.initials: B
authors.lastname: Yu
authors.forename: Jian-feng
authors.initials: JF
authors.lastname: Liu
authors.forename: Lai
authors.initials: L
authors.lastname: Gui
mesh_terms: D000293:Adolescent; D000328:Adult; D001732:Bite Force; D005260:Female; D006801:Humans; D008334:Mandible / Q000601:surgery*; D008409:Mastication / Q000502:physiology; D010027:Osteotomy / Q000379:methods*; D055815:Young Adult