title: A retrospective study on the prognosis of single implant placed at the sinus bone graft site.
abstract: OBJECTIVE
  The purposes of this study were to evaluate survival of single implants placed at the sinus bone graft site and to estimate influencing factors on the survival.
  
  
  METHODS
  The patients treated with single implant at the sinus bone graft site at Seoul National University Bundang Hospital from June 2003 to December 2006 were included. All the patients' data were collected by reviewing and analyzing dental record and radiograph.
  
  
  RESULTS
  Total 60 patients (65 implants) were included in this study. The overall survival rate was 86.2%. Survival rate of maxillary sinusitis group (40.0%) was significantly lower than that of no maxillary sinusitis group (90.0%) (P = .038).
  
  
  CONCLUSIONS
  From the result, incidence of maxillary sinusitis was detected as an influencing factor on the survival of single implant at the sinus bone graft site. It was important to prevent maxillary sinusitis for the improvement of the prognosis.
authors.affiliation: Associate Professor, Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea and School of Dentistry, Seoul National University, Seoul, Republic of Korea; Associate Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul National University Bundang Hospital, Seongnam, Republic of Korea and School of Dentistry, Seoul National University, Seoul, Republic of Korea.
authors.forename: Young-Kyun
authors.initials: YK
authors.lastname: Kim
authors.affiliation: Resident, Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea and School of Dentistry, Seoul National University, Seoul, Republic of Korea.
authors.forename: Kyo-Jin
authors.initials: KJ
authors.lastname: Ahn
authors.affiliation: Associate Professor, Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea and School of Dentistry, Seoul National University, Seoul, Republic of Korea. Electronic address: pilyoung@snubh.org.
authors.forename: Pil-Young
authors.initials: PY
authors.lastname: Yun
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003758:Dental Implantation, Endosseous / Q000379:methods*; D019250:Dental Implants, Single-Tooth; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000601:surgery*; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D016896:Treatment Outcome