title: Long Term Follow-Up of Dental Implants Placed in Autologous Onlay Bone Graft.
abstract: OBJECTIVE
  The aim of this study was to evaluate the efficacy of autologous intraoral onlay bone grafting (OBG) in correlation with long-term survival rates of dental implants placed in the augmented bone.
  
  
  METHODS
  A retrospective study was conducted on 214 patients who received a total of 633 dental implants placed in 224 autologous intraoral block OBG augmentations, combined with Bio-Oss - mixed with platelet-rich plasma (PRP) and covered by platelet-poor plasma (PPP) - as scaffold, with a follow-up time up to 137 months (mean 39.9 ± 30.9 months).
  
  
  RESULTS
  A total of 216 OBG cases were successful (96.4%), and most of the augmentations were uneventful (88.4%). Bone graft exposure was moderately associated with bone graft failure (χ(2)  = 3.76, p = .052). The healing period after implant placement was 4-6 months (mean 5.6 ± 2.56). The majority of the 591 implants survived (93.4%). The cumulative survival rate of the implants was 83%.
  
  
  CONCLUSIONS
  We suggest that augmentation of severely atrophied jaw bone through the placement of horizontal and/or vertical intraoral OBGs in combination with Bio-Oss saturated with PRP and covered by PPP should be considered a reliable, safe, and very effective surgical technique for obtaining high bone graft survival rate and high long-term implant survival rate.
authors.affiliation: Oral and Maxillofacial Surgery, Advanced Implantology, Periodontology & Endodontology, Schwartz-Arad Day-Care Surgical Center, Ramat Hasharon, Israel.
authors.forename: Devorah
authors.initials: D
authors.lastname: Schwartz-Arad
authors.affiliation: Department of Statistics and Operations Research, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Ronen
authors.initials: R
authors.lastname: Ofec
authors.affiliation: Oral and Maxillofacial Surgery, Schwartz-Arad Day-Care Surgical Center, Ramat Hasharon, Israel.
authors.forename: Galit
authors.initials: G
authors.lastname: Eliyahu
authors.affiliation: Clinical Research Units, Schwartz-Arad Day-Care Surgical Center, Ramat Hasharon, Israel.
authors.forename: Angela
authors.initials: A
authors.lastname: Ruban
authors.affiliation: Clinical Research Units, Oral and Maxillofacial Surgery, Schwartz-Arad Day-Care Surgical Center, Ramat Hasharon, Israel.
authors.forename: Nir
authors.initials: N
authors.lastname: Sterer
mesh_terms: D016025:Bone Transplantation / Q000379:methods*; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008903:Minerals; D053657:Platelet-Rich Plasma; D012189:Retrospective Studies; D014182:Transplantation, Autologous
chemical_list: C077540:Bio-Oss; D015921:Dental Implants; D008903:Minerals
keywords: autologous bone; bone augmentation; bone grafting; implant survival; long-term survival