title: Postextraction osteotome sinus floor elevation technique using plasma-rich growth factors.
abstract: OBJECTIVE
  To evaluate a modified osteotome sinus floor elevation technique with immediate postextraction implant placement and the adjunct of a platelet-derived fibrin plug for the rehabilitation of maxillary premolar sites.
  
  
  METHODS
  Fifteen patients with nonrestorable fractured endodontically treated maxillary premolars were consecutively enrolled in the study. After extraction, the membrane was gradually elevated using osteotomes, with the interposition of a fibrin clot. Subsequently, an implant embedded with plasma very rich in growth factors was inserted.
  
  
  RESULTS
  No implant failed after a mean follow-up of 35 months. The average membrane lift was 2.9 ± 0.8 mm. After 1 year of loading, marginal bone loss averaged 0.36 ± 0.19 mm. No postoperative symptoms were reported. All patients reported full satisfaction for mastication function, phonetics, and aesthetics.
  
  
  CONCLUSIONS
  The present technique represents a viable option for the rehabilitation of fresh postextraction maxillary premolar sockets.
authors: Dental Clinic, Department of Health Technologies, Università degli Studi di Milano, Milan, Italy.
authors: Silvio
authors: S
authors: Taschieri
authors: Massimo
authors: M
authors: Del Fabbro
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000145:classification; D018786:Bone Substitutes / Q000627:therapeutic use; D015331:Cohort Studies; D004955:Esthetics, Dental; D005260:Female; D005337:Fibrin / Q000627:therapeutic use; D005500:Follow-Up Studies; D006801:Humans; D057893:Immediate Dental Implant Loading; D036341:Intercellular Signaling Peptides and Proteins / Q000627:therapeutic use*; D008297:Male; D008409:Mastication / Q000502:physiology; D008875:Middle Aged; D008903:Minerals / Q000627:therapeutic use; D010027:Osteotomy / Q000295:instrumentation*; D017060:Patient Satisfaction; D010700:Phonetics; D059745:Piezosurgery / Q000295:instrumentation; D010949:Plasma / Q000502:physiology; D011446:Prospective Studies; D016300:Radiography, Bitewing; D059546:Sinus Floor Augmentation / Q000379:methods*; D014081:Tooth Extraction; D020390:Tooth Socket / Q000601:surgery; D016896:Treatment Outcome
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; D036341:Intercellular Signaling Peptides and Proteins; D008903:Minerals; D005337:Fibrin