title: Intraoperative complications during sinus floor elevation using two different ultrasonic approaches: a two-center, randomized, controlled clinical trial.
abstract: OBJECTIVE
  The aim of this study was to assess the prevalence of intraoperative complications during maxillary sinus elevation with lateral approach using a piezoelectric device with two different surgical techniques.
  
  
  METHODS
  Antrostomies were randomly performed by outlining a window (group A, 36 patients) or by eroding the cortical wall with a grinding insert until the membrane was visible under a thin layer of bone, before outlining the window (group B, 36 patients). Occurrence of membrane perforation, laceration of vascular branches, and surgical time was recorded.
  
  
  RESULTS
  Seventy-two patients underwent sinus floor elevation: four perforations (11.1%) were observed in group A (two occurred during elevation with hand instruments) and zero perforations in group B (p < .05). No evidence of vascular lacerations was registered in both groups. A clinically insignificant but statistically shorter surgical time was recorded in group A (9.2 ± 3.7 minutes) than in group B (13.3 ± 2.4 minutes; p < .05).
  
  
  CONCLUSIONS
  Within the limits of the present study, it may be concluded that ultrasonic erosion of the lateral wall of the sinus is a more predictable technique than piezoelectric outlining of a bone window in preventing from accidental perforations of Schneiderian membrane during sinus augmentation procedures.
authors: Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
authors: Claudio
authors: C
authors: Stacchi
authors: Tomaso
authors: T
authors: Vercellotti
authors: Annamaria
authors: A
authors: Toschetti
authors: Stefano
authors: S
authors: Speroni
authors: Stefano
authors: S
authors: Salgarello
authors: Roberto
authors: R
authors: Di Lenarda
mesh_terms: D000328:Adult; D000368:Aged; D003758:Dental Implantation, Endosseous; D005260:Female; D006801:Humans; D007431:Intraoperative Complications / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D059745:Piezosurgery / Q000295:instrumentation / Q000379:methods*; D015995:Prevalence; D059546:Sinus Floor Augmentation / Q000295:instrumentation / Q000379:methods*; D016896:Treatment Outcome; D014465:Ultrasonics / Q000295:instrumentation*
keywords: lateral antrostomy; membrane perforation; piezosurgery; randomized clinical trial