title: Evaluation of the nose profile after maxillary advancement with impaction surgeries.
abstract: OBJECTIVE
  The aim of this study was to identify and quantify nasal profile changes following maxillary advancement (MA) and maxillary advancement with impaction (MAI) with Le Fort I osteotomies.
  
  
  METHODS
  The study consisted of preoperative and postoperative lateral cephalograms of 42 class III adult patients. The study sample was divided into 2 groups, with the first group composed of 22 patients who underwent MA surgery and the second group composed of 20 patients who underwent MAI surgery. In total, 7 skeletal parameters and 17 soft-tissue parameters related to nasal projection, hump, dorsal convexity, and the nasolabial region were evaluated on the cephalograms, and hard- and soft-tissue relationships were assessed.
  
  
  RESULTS
  Nasal length, hump, nasal depths, distance from the most convex point of the Alar curvature to the most inferior point of the nostril, alar curvature-subnasale, and subnasale-pronasale measurements decreased postoperatively. In the MAI group, MA correlated with significant decreases in nasal length and hump. In the MA group, MA correlated with pronasale position (P < 0.05); significant decreases in nasal depth, columella convexity, and subnasale-pronasale length; and significant changes in subnasale position.
  
  
  CONCLUSIONS
  There is little difference in the effects of the 2 different maxillary surgeries on the postoperative nasal profile.
authors: Department of Orthodontics, Faculty of Dentistry, Süleyman Demirel University, Ankara, Turkey.
authors: Elçin
authors: E
authors: Esenlik
authors: Basar
authors: B
authors: Kaya
authors: Ayse
authors: A
authors: Gülsen
authors: Onur
authors: O
authors: Çukurluoğlu
authors: Selahattin
authors: S
authors: Özmen
authors: Reha
authors: R
authors: Yavuzer
mesh_terms: D000328:Adult; D002508:Cephalometry; D005260:Female; D006801:Humans; D008297:Male; D008313:Malocclusion, Angle Class III / Q000601:surgery*; D008437:Maxilla / Q000601:surgery*; D009666:Nose / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D019340:Osteotomy, Le Fort; D011859:Radiography; D012044:Regression Analysis; D018709:Statistics, Nonparametric; D016896:Treatment Outcome