title: A new method to eliminate the risk of maxillary sinusitis with zygomatic implants.
abstract: OBJECTIVE
  A new approach for zygomatic implant placement was proposed to eliminate the risk of maxillary sinusitis related to the procedure.
  
  
  METHODS
  A prospective study of this new approach was conducted, and consecutive patients treated between June 2007 and December 2008 were included. An extended sinus lift with retained bone window was performed, such that zygomatic implants were placed completely outside the displaced maxillary sinuses. All patients were followed up radiologically at regular intervals using cone beam computed tomography to evaluate the status of the zygomatic implants and the condition of the maxillary sinuses.
  
  
  RESULTS
  Sixteen patients (9 women and 7 men with a mean age of 60) were treated with 37 zygomatic implants. Within the period of investigation from 6 months to 24 months, there were no failed zygomatic implants, and no instances of maxillary sinusitis were reported.
  
  
  CONCLUSIONS
  The new approach that combined the zygomatic implant placement with the extended sinus lift procedure was predictable and fulfilled the purpose of lowering the risk of maxillary sinusitis.
authors.affiliation: Associated Branemark Osseointegration Center, The Center, Hong Kong SAR. jameskfchow@hotmail.com
authors.forename: James
authors.initials: J
authors.lastname: Chow
authors.forename: Peter
authors.initials: P
authors.lastname: Wat
authors.forename: Edward
authors.initials: E
authors.lastname: Hui
authors.forename: Philip
authors.initials: P
authors.lastname: Lee
authors.forename: William
authors.initials: W
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000473:pathology; D000540:Alveolar Ridge Augmentation / Q000379:methods; D016025:Bone Transplantation / Q000379:methods*; D054893:Cone-Beam Computed Tomography; D003758:Dental Implantation, Endosseous / Q000009:adverse effects* / Q000379:methods; D015921:Dental Implants / Q000009:adverse effects*; D019094:Dental Prosthesis, Implant-Supported; D003830:Denture, Partial, Fixed; D003833:Denture, Partial, Temporary; D005260:Female; D006801:Humans; D007575:Jaw, Edentulous / Q000150:complications / Q000534:rehabilitation / Q000601:surgery; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008443:Maxillary Sinus / Q000000981:diagnostic imaging / Q000293:injuries; D015523:Maxillary Sinusitis / Q000209:etiology / Q000517:prevention & control*; D008875:Middle Aged; D013516:Oral Surgical Procedures, Preprosthetic / Q000009:adverse effects / Q000379:methods; D016896:Treatment Outcome; D015050:Zygoma / Q000000981:diagnostic imaging / Q000601:surgery*
chemical_list: D015921:Dental Implants