title: Effect of barrier membranes on the outcomes of maxillary sinus floor augmentation: a meta-analysis of histomorphometric outcomes.
abstract: OBJECTIVE
  Sinus floor elevation via the lateral window approach represents a reliable technique for augmenting bone volume in the atrophic posterior maxilla. However, controversy remains regarding the effect of placement of a barrier membrane over the lateral window. This histomorphometric meta-analysis sought to clarify the effect of barrier membranes in lateral window sinus augmentation.
  
  
  METHODS
  An electronic search of three databases and a hand search in implant-related journals for studies published through January 2013 in the English language was conducted. Randomized controlled trials, prospective human clinical studies, retrospective investigations, and case series reporting histomorphometric results after sinus elevation using the lateral window approach with at least six patients and a minimum follow-up period of 6 months were included.
  
  
  RESULTS
  The initial search yielded 1,040 articles, of which 94 were further evaluated for eligibility. Finally, 37 studies were chosen and separated into membrane (group 1) and no-membrane (group 2) groups. Similar vital bone formation was found in both groups: 32.36% for group 1 and 33.07% for group 2.
  
  
  CONCLUSIONS
  Based does not influence the amount of vital bone formation after sinus augmentation. Additionally, the type of grafting material used and healing time did not influence the histomorphometric outcome.
authors: Fernando
authors: F
authors: Suárez-López Del Amo
authors: Inmaculada
authors: I
authors: Ortega-Oller
authors: Andrés
authors: A
authors: Catena
authors: Alberto
authors: A
authors: Monje
authors: Vahid
authors: V
authors: Khoshkam
authors: Laura
authors: L
authors: Torrecillas-Martínez
authors: Hom-Lay
authors: HL
authors: Wang
authors: Pablo
authors: P
authors: Galindo-Moreno
mesh_terms: D001861:Bone Regeneration; D002986:Clinical Trials as Topic; D003758:Dental Implantation, Endosseous / Q000379:methods*; D006801:Humans; D008437:Maxilla / Q000601:surgery*; D008443:Maxillary Sinus / Q000601:surgery*; D008567:Membranes, Artificial; D010012:Osteogenesis; D011446:Prospective Studies; D012189:Retrospective Studies; D059546:Sinus Floor Augmentation / Q000379:methods*; D016896:Treatment Outcome; D014945:Wound Healing
chemical_list: D008567:Membranes, Artificial