title: Maxillary sinus augmentation in the presence of antral pseudocyst: a clinical approach.
abstract: OBJECTIVE
  The objective of this study is to present patients with sinus augmentation in the presence of an antral pseudocyst and the surgical procedure, complications, and outcome.
  
  
  METHODS
  From 2002 to 2005, 109 patients were scheduled for 1- or 2-stage maxillary sinus floor augmentation (n = 129) because of inadequate alveolar bone height for implant placement. Radiographically, a significant antral pseudocyst was shown.
  
  
  RESULTS
  In 8 (7.3%) patients, an antral pseudocyst was diagnosed, and in 2 a history of inactive sinusitis was found preoperatively. A faint dome-shaped radiopacity was found at the lower border of the maxillary sinus. Average lesion size was 5.09 cm2. All implants functioned well at follow-up (mean 20 months).
  
  
  CONCLUSIONS
  A pseudocyst of the maxillary sinus is not a contraindication for sinus augmentation. The low frequency of sinus membrane perforation and postsurgery sinusitis make the operation safe. In large lesions and in cases with an unclear diagnosis, further evaluation is needed before sinus augmentation.
authors.affiliation: Department of Oral and Maxillofacial Surgery, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel-Aviv Univeristy, and the Oral and Maxillofacial Unite, Sapir Medical Center, Kfar-Saba, Israel. oferanat1@isdn.net.il
authors.forename: Ofer
authors.initials: O
authors.lastname: Mardinger
authors.forename: Ifat
authors.initials: I
authors.lastname: Manor
authors.forename: Eitan
authors.initials: E
authors.lastname: Mijiritsky
authors.forename: Abraham
authors.initials: A
authors.lastname: Hirshberg
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D018786:Bone Substitutes; D002417:Cattle; D003560:Cysts / Q000000981:diagnostic imaging / Q000473:pathology*; D003758:Dental Implantation, Endosseous; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D008903:Minerals; D009078:Mucocele / Q000175:diagnosis; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D010254:Paranasal Sinus Diseases / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; D008903:Minerals