title: Removal of a migrated dental implant from the maxillary sinus after 7 years: a case report.
abstract: BACKGROUND
  The accidental displacement of dental implants into the maxillary sinus is an infrequent but possible complication in dental clinical practice. The main cause of implant displacement is the inadequate bone height in the posterior maxilla. This event usually occurs during surgery, and it is more rarely reported in the post-operative period, especially with long-term follow-ups.
  
  
  METHODS
  Here, a case of an implant migrated inside the maxillary sinus at the time of abutment connection and removed 7 years later is described.
  
  
  CONCLUSIONS
  Postoperative recovery was uneventful. To the author's best knowledge, this case represents the first report concerning migration of an oral implant into the maxillary sinus removed after 7 years.
authors.affiliation: Researcher of Oral Surgery, Dental School, University of Chieti-Pescara, Via dei Frentani 98/B, 66100, Chieti, Italy. ascarano@unich.it
authors.forename: Antonio
authors.initials: A
authors.lastname: Scarano
authors.forename: Vittoria
authors.initials: V
authors.lastname: Perrotti
authors.forename: Francesco
authors.initials: F
authors.lastname: Carinci
authors.forename: Jamil Awad
authors.initials: JA
authors.lastname: Shibli
mesh_terms: D000328:Adult; D015921:Dental Implants; D005548:Foreign-Body Migration / Q000601:surgery*; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000473:pathology / Q000601:surgery*
chemical_list: D015921:Dental Implants