title: Stability of autogenous bone grafts after sinus lift procedures: a comparative study between anterior and posterior aspects of the iliac crest and an intraoral donor site.
abstract: BACKGROUND
  Autologous bone is the standard material used for augmentations in oral-maxillofacial surgery. Depending on the origin of the graft, subsequent bone resorption may vary.
  
  
  METHODS
  This prospective study evaluated 57 patients receiving 2-stage sinus floor augmentations. Monocortical samples were taken at the site of bone harvesting, including the posterior (n = 28) and anterior pelvic (n = 15) and retromolar (n = 14) regions. At second-stage surgery, 6 months after the implant insertion, bone cores were harvested at the site of implant placement. All samples were analyzed by microradiography.
  
  
  RESULTS
  Mean retromolar mineralization was 68.7% +/- 8.75%; 35.1% +/- 7.6% in the anterior and 30.7% +/- 9.5% in the posterior iliac crest. Areas augmented with grafts originating from the retromolar region showed a significant decrease to 53.0% +/- 5.15% (P = .001). A stable mineralization of 36.1% +/- 7.59% was found in sites where bone grafts from the anterior pelvic crest were used. Grafts from the posterior pelvis showed a slight increase to 34.5% +/- 6.5%.
  
  
  CONCLUSIONS
  This prospective clinical study demonstrates the differences in mineralization depending on the origin of autogenous bone. Even after 6 months, these values could still be correlated to the transplants origin.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University of Erlangen-Nuremberg, Erlangen, Germany. Michael.Thorwarth@mkg.imed.uni-erlangen.de
authors.forename: Michael
authors.initials: M
authors.lastname: Thorwarth
authors.forename: Safwan
authors.initials: S
authors.lastname: Srour
authors.forename: Endre
authors.initials: E
authors.lastname: Felszeghy
authors.forename: Peter
authors.initials: P
authors.lastname: Kessler
authors.forename: Stefan
authors.initials: S
authors.lastname: Schultze-Mosgau
authors.forename: Karl Andreas
authors.initials: KA
authors.lastname: Schlegel
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000379:methods*; D015519:Bone Density; D016025:Bone Transplantation / Q000379:methods* / Q000502:physiology*; D002113:Calcification, Physiologic; D003758:Dental Implantation, Endosseous; D005260:Female; D006801:Humans; D007085:Ilium / Q000601:surgery; D008297:Male; D008334:Mandible / Q000601:surgery; D008443:Maxillary Sinus / Q000601:surgery; D008852:Microradiography; D008875:Middle Aged; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods; D011446:Prospective Studies; D018709:Statistics, Nonparametric; D020858:Tissue and Organ Harvesting; D014182:Transplantation, Autologous / Q000379:methods