title: Crestal Approach to Sinus Floor Elevation for Atrophic Maxilla Using Platelet-Rich Fibrin as the Only Grafting Material: A 1-Year Prospective Study.
abstract: OBJECTIVE
  Platelet-rich fibrin (PRF) has been recently used as the sole grafting material in sinus floor elevation procedures. The aim of this prospective study was to measure the bone gain around the dental implant after using the crestal approach to sinus floor elevation using platelet-rich fibrin as the only grafting material in atrophic posterior maxillae with residual bone height <5 mm.
  
  
  METHODS
  Two different types of implants were used: hydroxyapatite (HA) and sandblasted acid-etched (SA) implants. Panoramic radiography and computed tomography were used to measure the endosinus bone gain.
  
  
  RESULTS
  Twenty-seven patients with 39 implants (19 HA and 20 SA) were included in this study. The mean residual bone measurements before surgery in the SA and HA groups were 2.85 and 2.68 mm, respectively. The mean average bone gains for 1 year in the SA and HA groups were 4.38 and 4.00 mm, respectively.
  
  
  CONCLUSIONS
  This prospective study showed that platelet-rich fibrin promoted endosinus bone gain when used as the grafting material in the crestal approach to sinus floor elevation.
authors.affiliation: *Assistant Professor, Department of Oral Maxillofacial Surgery, Nagoya City University, Graduate School of Medical Sciences, Nagoya, Japan. †Resident, Department of Oral Maxillofacial Surgery, Nagoya City University, Graduate School of Medical Sciences, Nagoya, Japan. ‡Professor, Department of Oral Maxillofacial Surgery, Nagoya City University, Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: Takeo
authors.initials: T
authors.lastname: Kanayama
authors.forename: Koichiro
authors.initials: K
authors.lastname: Horii
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Senga
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Shibuya
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000601:surgery*; D001792:Blood Platelets; D001861:Bone Regeneration / Q000187:drug effects; D005260:Female; D005337:Fibrin / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008439:Maxillary Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D008875:Middle Aged; D011446:Prospective Studies; D011862:Radiography, Panoramic; D059546:Sinus Floor Augmentation / Q000379:methods*; D014057:Tomography, X-Ray Computed
chemical_list: D005337:Fibrin