title: Le Fort 1 osteotomy and calvarial bone grafting for severely resorbed maxillae.
abstract: BACKGROUND
  Long standing maxillary edentulism leads to alveolar ridge resorption which prevent implant placement and causes prosthetic malocclusion. The aim of the study was to assess vertical and transversal bone increase following Le Fort 1 osteotomy associated with calvarial bone grafting.
  
  
  METHODS
  66 patients who presented severely atrophic maxillae were treated with Le Fort 1 osteotomy with bone grafting from 2003 to 2014. Vertical and transversal bone level was measured preoperatively and 6 months post-operatively to calculate the alveolar ridge augmentation. Follow up ranged from 10 months to 11 years.
  
  
  RESULTS
  The mean increase of bone height was 9.3 mm and the mean increase of bone width was 6 mm 417 endosseous implants were placed in the grafted maxilla. Mean endosseous implant length was of 10.7 mm at the first molar site (range: 8-16 mm). A total of 25 implants failed, the overall implant survival rate is of 94%. The definitive prosthetis was fixed in 65% of the patients and removable in 35% of the patients.
  
  
  CONCLUSIONS
  Le Fort 1 osteotomy associated with calvarial bone grafting is the main treatment option able to offer fixed bridge and perfect class 1 occlusion in cases of severe maxillary atrophy.
authors.affiliation: Université Lille 2 Droit et Santé, F-59000 Lille, France; Oral and Maxillofacial Department, Roger Salengro Hospital, CHU Lille, F-59000 Lille, France. Electronic address: schlund.matthias@wanadoo.fr.
authors.forename: M
authors.initials: M
authors.lastname: Schlund
authors.affiliation: Université Lille 2 Droit et Santé, F-59000 Lille, France; Oral and Maxillofacial Department, Roger Salengro Hospital, CHU Lille, F-59000 Lille, France.
authors.forename: R
authors.initials: R
authors.lastname: Nicot
authors.affiliation: Université Lille 2 Droit et Santé, F-59000 Lille, France; Oral and Maxillofacial Department, Roger Salengro Hospital, CHU Lille, F-59000 Lille, France.
authors.forename: L
authors.initials: L
authors.lastname: Lauwers
authors.affiliation: Université Lille 2 Droit et Santé, F-59000 Lille, France; Oral and Maxillofacial Department, Roger Salengro Hospital, CHU Lille, F-59000 Lille, France; INSERM, U1008, Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France.
authors.forename: G
authors.initials: G
authors.lastname: Raoul
authors.affiliation: Université Lille 2 Droit et Santé, F-59000 Lille, France; Oral and Maxillofacial Department, Roger Salengro Hospital, CHU Lille, F-59000 Lille, France; INSERM, U1008, Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France.
authors.forename: J
authors.initials: J
authors.lastname: Ferri
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000601:surgery*; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001284:Atrophy / Q000000981:diagnostic imaging / Q000601:surgery; D003758:Dental Implantation, Endosseous; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D019340:Osteotomy, Le Fort / Q000379:methods*; D010294:Parietal Bone / Q000637:transplantation*; D011862:Radiography, Panoramic; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult
keywords: Alveolar ridge augmentation; Dental implant; Edentulous maxillae; Le Fort 1 osteotomy