title: VEGF and MVD expression in sinus augmentation with autologous bone and several graft materials.
abstract: OBJECTIVE
  The aim of this study was to assess vascular endothelial growth factor (VEGF) expression and microvessel density (MVD) in maxillary sinus augmentation with autogenous bone and different graft materials for evaluating their angiogenic potential.
  
  
  METHODS
  Biopsies were harvested 10 months after sinus augmentation with a combination of autogenous bone and different graft materials: hydroxyapatite (HA, n = 6 patients), demineralized freeze-dried bone allograft (DFDBA, n = 5 patients), calcium phosphate (CP, n = 5 patients), Ricinus communis polymer (n = 5 patients) and control group--autogenous bone only (n = 13 patients).
  
  
  RESULTS
  In all the samples, higher intensities of VEGF expression were prevalent in the newly formed bone, while lower intensities of VEGF expression were predominant in the areas of mature bone. The highest intensity of VEGF expression in the newly formed bone was expressed by HA (P < 0.001) and CP in relation to control (P < 0.01) groups. The lowest intensities of VEGF expression in newly formed bone were shown by DFDBA and polymer groups (P < 0.05). When comparing the different grafting materials, higher MVD were found in the newly formed bone around control, HA and CP (P < 0.001).
  
  
  CONCLUSIONS
  Various graft materials could be successfully used for sinus floor augmentation; however, the interactions between bone formation and angiogenesis remain to be fully characterized.
authors.affiliation: Department of Periodontology, Dental School at Araraquara, State University of São Paulo (UNESP), Araraquara, SP, Brazil.
authors.forename: R J
authors.initials: RJ
authors.lastname: Boëck-Neto
authors.forename: L
authors.initials: L
authors.lastname: Artese
authors.forename: A
authors.initials: A
authors.lastname: Piattelli
authors.forename: J A
authors.initials: JA
authors.lastname: Shibli
authors.forename: V
authors.initials: V
authors.lastname: Perrotti
authors.forename: M
authors.initials: M
authors.lastname: Piccirilli
authors.forename: E
authors.initials: E
authors.lastname: Marcantonio
mesh_terms: D000539:Alveolar Process / Q000098:blood supply / Q000502:physiology* / Q000601:surgery; D000540:Alveolar Ridge Augmentation / Q000379:methods; D001672:Biocompatible Materials / Q000627:therapeutic use; D001861:Bone Regeneration / Q000187:drug effects; D018786:Bone Substitutes / Q000627:therapeutic use*; D016025:Bone Transplantation / Q000379:methods; D002130:Calcium Phosphates / Q000627:therapeutic use; D006801:Humans; D006882:Hydroxyapatites / Q000627:therapeutic use; D008437:Maxilla / Q000098:blood supply / Q000502:physiology* / Q000601:surgery; D008443:Maxillary Sinus / Q000098:blood supply / Q000502:physiology / Q000601:surgery; D055806:Microvessels / Q000187:drug effects / Q000254:growth & development; D018919:Neovascularization, Physiologic / Q000187:drug effects* / Q000502:physiology; D016348:Osseointegration / Q000502:physiology; D012116:Resins, Plant / Q000627:therapeutic use; D012278:Ricinus; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism*
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D002130:Calcium Phosphates; D006882:Hydroxyapatites; D012116:Resins, Plant; D042461:Vascular Endothelial Growth Factor A