title: Histomorphometric evaluation and clinical assessment of endosseous implants in iliac bone grafts with shortened healing periods.
abstract: OBJECTIVE
  In the present study solid monocortical hipbone onlay grafts of the maxilla were analyzed histologically after a healing period of 3 months. The clinical success of the implants placed in the grafted bone was evaluated.
  
  
  METHODS
  Nineteen patients underwent augmentation with avascular iliac bone. A 2-stage procedure was performed with a 3-month healing period between graft and implant placement. At implant placement bone biopsy samples were taken at the proposed implant sites.
  
  
  RESULTS
  Of the 117 implants placed, 1 was not osseointegrated at the time of abutment connection. No implants were lost after loading during an observation period of up to 3 years. Clinical appearance of the augmented bone after 3 months showed a dense cortical layer with good blood perfusion. Histologic specimens were analyzed quantitatively and showed an average of 43.2% newly formed bone.
  
  
  CONCLUSIONS
  Histomorphometry showed that the amount of newly formed bone after 3 months was comparable to that found after a healing period of 4.5 months. The clinical success of the implants placed after the shortened healing period was comparable to that found in nonaugmented bone.
  
  
  CONCLUSIONS
  This study showed that after avascular iliac bone grafting, 3 months of revascularization was sufficient to ensure the secure placement of dental implants in second-stage surgery for this patient population.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Clinical Navigation and Robotics, Charité-Campus Virchow Clinic, Berlin, Germany. katja.nelson@charite.de
authors.forename: Katja
authors.initials: K
authors.lastname: Nelson
authors.forename: Hakan
authors.initials: H
authors.lastname: Ozyuvaci
authors.forename: Bilge
authors.initials: B
authors.lastname: Bilgic
authors.forename: Martin
authors.initials: M
authors.lastname: Klein
authors.forename: Detlef
authors.initials: D
authors.lastname: Hildebrand
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001706:Biopsy; D016025:Bone Transplantation / Q000379:methods* / Q000473:pathology; D003758:Dental Implantation, Endosseous / Q000379:methods*; D005260:Female; D006801:Humans; D007085:Ilium / Q000637:transplantation*; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D013997:Time Factors; D016896:Treatment Outcome