title: Benign paroxysmal positional vertigo as a complication of sinus floor elevation.
abstract: OBJECTIVE
  Osteotome sinus floor elevation (OSFE) is an often-used technique of great utility in certain implant patients with resorbed posterior maxilla. Recently benign paroxysmal positional vertigo (BPPV) has been reported as an early postoperative complication following OSFE. Although OSFE-induced BPPV commonly resolves itself within a month without treatment, this complication can be a cause of trouble between the implant surgeon and patient. This report presents a case of BPPV following OSFE.
  
  
  METHODS
  A 27-year-old man without any significant medical problems and missing his maxillary right first molar, was scheduled for OSFE and simultaneous implant placement.
  
  
  RESULTS
  The patient suffered dizziness accompanied by nausea immediately after implant placement using OSFE. Following referral to the ear nose throat clinic, "right posterior canal BPPV" was diagnosed. Despite anti vertigo medication and a single episode of the Epley maneuver, the condition did not improve completely. The Epley maneuver was then applied 7 and 8 days later and the symptoms of BPPV disappeared. One year later, the patient remained symptom-free.
  
  
  CONCLUSIONS
  Before sinus elevation with an osteotome, implant surgeons should screen out patients with a history of vertigo, to diminish the possibility of BPPV. Operators should be aware of BPPV symptoms. As the symptoms may be very incapacitating, immediate referral to an otorhinolaryngologist is recommended.
authors.affiliation: Department of Periodontology, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea.
authors.forename: Moon-Sun
authors.initials: MS
authors.lastname: Kim
authors.forename: Jae-Kwan
authors.initials: JK
authors.lastname: Lee
authors.forename: Beom-Seok
authors.initials: BS
authors.lastname: Chang
authors.forename: Heung-Sik
authors.initials: HS
authors.lastname: Um