title: Sinus floor augmentation at the time of maxillary molar extraction: success and failure rates of 137 implants in function for up to 3 years.
abstract: BACKGROUND
  Implant restoration of the posterior maxilla poses significant challenges to the clinician. In an effort to increase the apical occlusal dimension of available bone for implant placement, a number of sinus augmentation approaches have been suggested. This paper describes a simplified technique for predictable sinus augmentation at the time of maxillary molar extraction.
  
  
  METHODS
  A modified trephine and osteotome technique was utilized to implode the interradicular bone following maxillary molar extraction. Particulate material and a membrane were then placed to maximize regeneration of alveolar bone.
  
  
  RESULTS
  One hundred sixty-seven (167) implants were subsequently placed in regenerated bone following the above technique. One hundred thirty-seven (137) of these implants were restored and in function for up to 3 years at the time of statistical compilation, and 136 of the 137 implants were functioning successfully by the Albrekteson criteria for a cumulative success rate of 97.8%.
  
  
  CONCLUSIONS
  The technique presented for simultaneous sinus augmentation at the time of molar extraction, followed by subsequent implant placement after maturation of regenerating tissues, demonstrates a high success rate for up to 3 years in function. Long-term studies may be useful in evaluating the continual efficacy of such an approach.
authors.forename: Paul A
authors.initials: PA
authors.lastname: Fugazzotto
authors.forename: Paoli Sergio
authors.initials: PS
authors.lastname: De
mesh_terms: D000328:Adult; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001857:Bone Matrix / Q000637:transplantation; D001861:Bone Regeneration; D018786:Bone Substitutes / Q000627:therapeutic use; D015921:Dental Implants; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008443:Maxillary Sinus / Q000601:surgery*; D008567:Membranes, Artificial; D008875:Middle Aged; D008903:Minerals / Q000627:therapeutic use; D008963:Molar / Q000601:surgery*; D010027:Osteotomy / Q000295:instrumentation / Q000379:methods; D014081:Tooth Extraction / Q000379:methods; D020390:Tooth Socket / Q000601:surgery; D016896:Treatment Outcome; D014945:Wound Healing
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; D015921:Dental Implants; D008567:Membranes, Artificial; D008903:Minerals