title: Distraction osteogenesis versus autogenous onlay grafting. Part I: outcome of implant integration.
abstract: OBJECTIVE
  The primary goal of this study was to compare bone-to-implant contact (BIC) in alveolar bone augmented by distraction osteogenesis with BIC in alveolar bone augmented by onlay iliac crest grafting.
  
  
  METHODS
  Alveolar bone defects were created bilaterally in 5 American foxhounds, and after healing, bone augmentation was accomplished using distraction osteogenesis on 1 side of the jaw and onlay grafting on the other. Twelve weeks after consolidation, implants were placed in augmented and control sites. The animals were sacrificed and the jaws harvested for histologic analysis after an additional 8 weeks.
  
  
  RESULTS
  The mean BIC was 54.7% +/- 14.6% for implants placed in distracted sites, 53.8% +/- 11.8% for sites where an onlay graft was used, and 51.2% +/- 14.4% for control sites. Significant differences in BIC were noted between experimental and control sites only at the apical third of the implant (19.8 +/- 1.8 for distracted sites; 15.5 +/- 1.5 for grafted sites; 8.0 +/- 0.5 for control sites; P < .05).
  
  
  CONCLUSIONS
  The data showed that both distraction osteogenesis and onlay grafting produce sufficient bone for implant placement. There were no differences between procedures in regard to BIC after 8 weeks.
  
  
  CONCLUSIONS
  These data suggest that both onlay grafting and vertical distraction are appropriate methods for bone augmentation prior to implant placement.
authors.affiliation: Texas A&M University System Health Science Center, Baylor College of Dentistry, Department of Biomedical Sciences, Dallas, TX 75246, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Perry
authors.forename: Nathan
authors.initials: N
authors.lastname: Hodges
authors.forename: D William
authors.initials: DW
authors.lastname: Hallmon
authors.forename: Terry
authors.initials: T
authors.lastname: Rees
authors.forename: Lynne A
authors.initials: LA
authors.lastname: Opperman
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000379:methods*; D000818:Animals; D016025:Bone Transplantation; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D004285:Dogs; D008297:Male; D008334:Mandible / Q000601:surgery; D023421:Models, Animal; D016348:Osseointegration; D019857:Osteogenesis, Distraction
chemical_list: D015921:Dental Implants