title: Clinical study of alveolar vertical distraction osteogenesis for implant.
abstract: OBJECTIVE
  To evaluate the clinical result of alveolar vertical distraction osteogenesis for implant.
  
  
  METHODS
  19 cases with severe vertical alveolar defects (more than 10 mm defect) underwent vertical distraction procedure before implant placement. 15 cases were male and 4 cases were female. The alveolar bone defects were caused by tumor resection in 10 cases, by trauma in 8 cases, and due to congenital defect in 1 case. The vertical defects in all cases were over 10 mm. X-ray examination were taken prior to operation and in 1 week, 2 week, 4 week, the end of active distraction and before removing distractor. Implants were placed in 17 cases after removing distractors. The prosthesis were finished 6 month later.
  
  
  RESULTS
  11 cases out of 19 had implant prosthesis. 6 cases had implant in the jaw but waiting for the prosthesis. Altogether 65 dental implants were placed, 2 cases did not receive further implant treatment because of cost problem. The study showed that new bone formed after distraction in all 19 cases. Average gained height of new bone was 13 mm.
  
  
  RESULTS
  Unexpected mandible fracture in 2 cases, infection in 1 case.
  
  
  CONCLUSIONS
  Alveolar vertical distraction is a good alterative for severe alveolar defects. The distractor should be further developed and modified.
authors.affiliation: Center of Implation, Peking University School of Stomatology, Beijing 100081, China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Lin
authors.forename: Xing
authors.initials: X
authors.lastname: Wang
authors.forename: Jianhui
authors.initials: J
authors.lastname: Li
authors.forename: Lixin
authors.initials: L
authors.lastname: Qiu
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
mesh_terms: D000540:Alveolar Ridge Augmentation; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D006801:Humans; D008334:Mandible / Q000601:surgery; D019857:Osteogenesis, Distraction
chemical_list: D015921:Dental Implants