title: Subnasal modified Le Fort I osteotomy: indications and results.
abstract: OBJECTIVE
  To study the possible morphologic changes in the nose after subnasal modified Le Fort I maxillary osteotomy to correct class III dentofacial deformities in patients with considered normal nasal morphology.
  
  
  METHODS
  Fifteen patients (7 males, 8 females) requiring maxillary advancement to treat class III dentofacial deformities were studied prospectively between January 2004 and January 2011. All the patients had an adequate projection of the nasal tip preoperatively preventing a conventional Le Fort I osteotomy. Patients received preoperatively (T1), 6 months after surgery (T2), and 12 months after the initial surgical procedure (T3) lateral cephalograms, CT-3D studies and clinical nose analysis to measure different morphologic variables including: the alar/nose base width, nasal tip protrusion and nasal bridge length using a digital sliding caliper directly on the soft-tissue surface of the face.
  
  
  RESULTS
  Mean age was 26.2 years, range 20-36 years. A significant advancement of the maxilla was noted postoperatively (mean 7.5 mm). After surgery the different anthropometric variables of the nasal region analysed had not suffered any significant variation. No significant differences were found when comparing T2 with T3 measures. No significant complications were found.
  
  
  CONCLUSIONS
  The results indicated that maxillary advancement using a subnasal modified Le Fort I osteotomy can prevent undesirable soft tissue changes of the nose when anterior repositioning of the maxilla is indicated in patients with preoperatively normal nasal morphology.
authors: Department of Oral and Maxillofacial Surgery (Head: Dr. J. Fernández Sanromán), Povisa Hospital, Vigo, PO, Spain. Electronic address: jfsan@mundo-r.com.
authors: Jacinto
authors: J
authors: Fernández Sanromán
authors: Department of Oral and Maxillofacial Surgery (Head: Dr. J. Fernández Sanromán), Povisa Hospital, Vigo, PO, Spain.
authors: Alberto
authors: A
authors: Costas López
authors: Department of Oral and Maxillofacial Surgery (Head: Dr. J. Fernández Sanromán), Povisa Hospital, Vigo, PO, Spain.
authors: Martín
authors: M
authors: Fernández Ferro
authors: Department of Oral and Maxillofacial Surgery (Head: Dr. J. Fernández Sanromán), Povisa Hospital, Vigo, PO, Spain.
authors: Jorge
authors: J
authors: Arenaz Bua
authors: Department of Oral and Maxillofacial Surgery (Head: Dr. J. Fernández Sanromán), Povisa Hospital, Vigo, PO, Spain.
authors: Annahys
authors: A
authors: López de Sánchez
mesh_terms: D000328:Adult; D002508:Cephalometry / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008313:Malocclusion, Angle Class III / Q000601:surgery; D008437:Maxilla / Q000601:surgery*; D009295:Nasal Bone / Q000033:anatomy & histology; D055171:Nasal Cartilages / Q000033:anatomy & histology; D009666:Nose / Q000033:anatomy & histology*; D019340:Osteotomy, Le Fort / Q000379:methods*; D011446:Prospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods; D055815:Young Adult
keywords: Dentofacial deformity; Maxillary osteotomies; Nasal morphology; Orthognathic surgery