title: Sinus floor elevation using a composite graft: clinical outcome of immediate implant placement.
abstract: OBJECTIVE
  The aim of this study is to assess the long-term outcome of a single-stage approach for implant placement and maxillary sinus floor elevation (MSFE) that used a combined scaffold of laminated calvarial bone, platelet-rich plasma (PRP), and beta-tricalcium phosphate.
  
  
  METHODS
  Thirty consecutive patients who required MSFE to allow rehabilitation with implant-supported prosthesis entered this survival study. All patients received their dental implants at the time of sinus elevation, and prosthetic loads were applied 4 to 6 months after implant insertion. Clinical outcomes used for evaluation included residual bone height at the subsinus area (height of subsinus bone [HSB], assessment of surgical morbidity, and implant success and survival rates.
  
  
  RESULTS
  Simultaneous insertion of 86 implants, either 10 mm long (n = 76) or 12 mm long (n = 10), took place in a total of 22 bilateral and 8 unilateral sinus elevations. Loading was initiated a mean of 3.8 ± 1.5 months after the first surgery. A mean HSB of 4.9 ± 1.7 mm was present before surgery, with 50% of the sample displaying HSBs of less than 4.4 mm. The mean implant survival time was 33.1 months (95% confidence interval, 31.7 to 34.5 months), with high rates of success (94.2%) and survival (96.5%). When patients were classified by their HSB (HSB ≥ 5 mm vs HSB < 5 mm), no differences were seen with regard to age, sex, healing time, or follow-up in terms of implant survival rates (P > .05).
  
  
  CONCLUSIONS
  Sinus floor elevation using mainly laminated calvarial bone, PRP, beta-tricalcium phosphate, and simultaneous stable implant placement is a predictable technique with low surgical morbidity that allows shorter healing times in patients with reduced bone height.
authors: Head and Neck Surgery Unit, Polusa Hospital, Lugo, Spain.
authors: Jose Joaquin
authors: JJ
authors: Mendonça-Caridad
authors: Maria
authors: M
authors: Nunez
authors: Pedro
authors: P
authors: Juiz-Lopez
authors: Salvador
authors: S
authors: Pita-Fernandez
authors: Juan
authors: J
authors: Seoane
mesh_terms: D000328:Adult; D000368:Aged; D001672:Biocompatible Materials / Q000627:therapeutic use*; D002130:Calcium Phosphates / Q000627:therapeutic use*; D005260:Female; D006085:Graft Survival; D006801:Humans; D057893:Immediate Dental Implant Loading / Q000379:methods*; D008297:Male; D008443:Maxillary Sinus / Q000601:surgery; D008875:Middle Aged; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D053657:Platelet-Rich Plasma; D059546:Sinus Floor Augmentation / Q000379:methods*; D012886:Skull; D013997:Time Factors; D060053:Transplant Donor Site
chemical_list: D001672:Biocompatible Materials; D002130:Calcium Phosphates; C485817:beta-tricalcium phosphate