title: The outcome of intraoral onlay block bone grafts on alveolar ridge augmentations: a systematic review.
abstract: OBJECTIVE
  The purpose of this study was to systematically review clinical studies examining the survival and success rates of implants placed with intraoral onlay autogenous bone grafts to answer the following question: do ridge augmentations procedures with intraoral onlay block bone grafts in conjunction with or prior to implant placement influence implant outcome when compared with a control group (guided bone regeneration, alveolar distraction, native bone or short dental implants.)?
  
  
  METHODS
  An electronic data banks and hand searching were used to find relevant articles on vertical and lateral augmentation procedures performed with intraoral onlay block bone grafts for dental implant therapy published up to October 2013. Publications in English, on human subjects, with a controlled study design -involving at least one group with defects treated with intraoral onlay block bone grafts, more than five patients and a minimum follow-up of 12 months after prosthetic loading were included. Two reviewers extracted the data.
  
  
  RESULTS
  A total of 6 studies met the inclusion criteria: 4 studies on horizontal augmentation and 2 studies on vertical augmentation. Intraoperative complications were not reported. Most common postsurgical complications included mainly mucosal dehiscences (4 studies), bone graft or membrane exposures (3 studies), complete failures of block grafts (2 studies) and neurosensory alterations (4 studies). For lateral augmentation procedures, implant survival rates ranged from 96.9% to 100%, while for vertical augmentation they ranged from 89.5% to 100%. None article studied the soft tissues healing.
  
  
  CONCLUSIONS
  Survival and success rates of implants placed in horizontally and vertically resorbed edentulous ridges reconstructed with block bone grafts are similar to those of implants placed in native bone, in distracted sites or with guided bone regeneration. More surgical challenges and morbidity arise from vertical augmentations, thus short implants may be a feasible option.
authors: Clínicas odontológicas, Gascó Oliag 1, 46021- Valencia, Spain, miguel.penarrocha@uv.es.
authors: Amparo
authors: A
authors: Aloy-Prósper
authors: David
authors: D
authors: Peñarrocha-Oltra
authors: Maria
authors: M
authors: Peñarrocha-Diago
authors: Miguel
authors: M
authors: Peñarrocha-Diago
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000379:methods*; D016025:Bone Transplantation; D015921:Dental Implants; D006801:Humans; D007284:Inlays; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants