title: Implant survival after sinus elevation with Straumann(®) BoneCeramic in clinical practice: ad-interim results of a prospective study at a 15-month follow-up.
abstract: OBJECTIVE
  Elevation of the sinus floor with Straumann(®) BoneCeramic gave promising results in some recent clinical studies. However, no study has evaluated the long-term survival of implants after this surgical procedure. We are conducting a prospective, observational study to evaluate the long-term implant survival after this surgical procedure in clinical practice. We present here an ad-interim report of this study, including only patients with ≥12-month follow-up after implant placement.
  
  
  METHODS
  This prospective cohort study will last until a follow-up of 5 years will be achieved in at least 50 patients. Inclusion criteria are: age ≥18 years; presence of a maxillary partial unilateral or bilateral edentulism involving the premolar/molar areas; elective rehabilitation with oral implants; and physical capability to tolerate conventional surgical and restorative procedures. Patients are treated according to the two-stage technique and the preparation is filled with Straumann(®) BoneCeramic. Implant survival is evaluated every 3 months for the first 2 years, and then every 6 months up to 5 years.
  
  
  RESULTS
  Fifteen patients are considered in this ad-interim analysis. Mean follow-up was 14.9 ± 3.1 (range: 6-18 months). In total, three implants failed, in one single patient, 6 months after insertion. The cumulative implant survival rate was 92.5% (95% confidence interval: 83.0-100%).
  
  
  CONCLUSIONS
  This ad-interim analysis suggests that the elevation of the sinus floor with Straumann(®) BoneCeramic may be an effective clinical option over >1-year follow-up. A longer term follow-up will allow a deeper characterization of these preliminary findings.
authors.affiliation: Tirrenian Stomatologic Institute, Lido di Camaiore, Lucca, Italy. covani@covani.it
authors.forename: Ugo
authors.initials: U
authors.lastname: Covani
authors.forename: Bruno
authors.initials: B
authors.lastname: Orlando
authors.forename: Luca
authors.initials: L
authors.lastname: Giacomelli
authors.forename: Roberto
authors.initials: R
authors.lastname: Cornelini
authors.forename: Antonio
authors.initials: A
authors.lastname: Barone
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001672:Biocompatible Materials / Q000627:therapeutic use*; D018786:Bone Substitutes / Q000627:therapeutic use*; D002130:Calcium Phosphates / Q000627:therapeutic use; D015331:Cohort Studies; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003829:Denture, Partial; D017886:Durapatite / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation / Q000601:surgery; D008297:Male; D008437:Maxilla / Q000473:pathology / Q000601:surgery*; D008443:Maxillary Sinus / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology; D011446:Prospective Studies; D016019:Survival Analysis
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D002130:Calcium Phosphates; D015921:Dental Implants; C485817:beta-tricalcium phosphate; D017886:Durapatite