title: The influence of remaining alveolar bone upon lateral window sinus augmentation implant survival.
abstract: BACKGROUND OF PROBLEMS:: Sinus augmentation is a predictable procedure to increase bone height in the posterior maxilla to facilitate ideal implant placement. However, the effect of residual alveolar bone height upon overall implant success remains unclear.
  
  
  OBJECTIVE
  : Hence, the objective of this study was to review and evaluate the correlation between amount of remaining crest alveolar bone before sinus augmentation and implant survival rate in grafted areas.
  
  
  METHODS
  : Medline search was used to identify articles published through September 2006, with preset selection criteria.
  
  
  RESULTS
  : A total of 156 peer-reviewed publications were selected. Eighteen publications fulfilled the selection criteria. Despite the great heterogeneity found among the selected studies, we were able to group the selected articles in 2 distinct groups and show average implant survival rate in the following residual bone categories: (1) <5 mm: 96% (80%-100%); and (2) >4 mm 99% (97%-100%).
  
  
  CONCLUSIONS
  : The data reviewed from the literature suggests a higher implant survival predictability as available residual bone increases. However, prospective studies with adequate sample size and control of confounding factors are needed to validate this observation.
authors: Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, 1101 N. University, Ann Arbor, MI 48109, USA.
authors: Hector F
authors: HF
authors: Rios
authors: Gustavo
authors: G
authors: Avila
authors: Pablo
authors: P
authors: Galindo
authors: Emanuel
authors: E
authors: Bratu
authors: Hom-Lay
authors: HL
authors: Wang
mesh_terms: D016301:Alveolar Bone Loss / Q000473:pathology*; D016025:Bone Transplantation; D003758:Dental Implantation, Endosseous / Q000379:methods*; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D006801:Humans; D059546:Sinus Floor Augmentation; D013997:Time Factors; D016896:Treatment Outcome