title: Zygomatic implants for the management of the severely atrophied maxilla: a retrospective analysis of 244 implants.
abstract: OBJECTIVE
  The aim of this investigation was to describe the surgical techniques, success rate, prosthetic rehabilitation, complications, and demographics of patients undergoing zygomatic implant surgery.
  
  
  METHODS
  A retrospective case series study design was implemented that included patients who received zygomatic implants identified in the database of the Department of Oral and Maxillofacial Surgery, Universidad El Bosque from 2009 to 2013. Contact information was retrieved from the charts and patients were asked to attend the department for a follow-up appointment. The population consisted of all patients found in the database and the sample included otherwise healthy patients living in Bogota, Colombia. Predictor variables were categorized into patient's medical history, demographics, surgical technique, and prosthetic rehabilitation. The outcome variable was the presence or absence of postoperative complications. Smokers, diabetics, and patients living outside Bogota were excluded. Patients also were excluded if their medical status had changed since zygomatic implant surgery. Descriptive statistics were computed for each study variable.
  
  
  RESULTS
  Data of 95 patients were retrieved. The sample consisted of 80 patients in whom 244 implants were inserted. The sample's mean age was 55.5 years. One hundred eleven zygomatic implants were placed in women and 133 were placed in men, with an overall complication rate of 9.9%, with sinusitis the most frequent complication (7.5%). Other complications included paresthesia (0.4%) and oroantral fistula (0.4%). The follow-up period was 6 to 48 months.
  
  
  CONCLUSIONS
  This investigation reviewed the authors' 4-year experience placing zygomatic implants and proved a reliable method for the treatment of the resorbed maxilla.
authors.affiliation: Director, Oral and Maxillofacial Surgery Residency Program, Universidad El Bosque, Bogotá, Colombia; Head, Department of Oral and Maxillofacial Surgery, Clínica El Bosque; Head, Department of Craniomaxillofacial Surgery, Hospital Simón Bolívar, Bogotá, Colombia. Electronic address: humfer_co@yahoo.com.
authors.forename: Humberto
authors.initials: H
authors.lastname: Fernández
authors.affiliation: Resident, Department of Oral and Maxillofacial Surgery, Universidad El Bosque, Bogotá, Colombia.
authors.forename: Andrés
authors.initials: A
authors.lastname: Gómez-Delgado
authors.affiliation: Resident, Department of Oral and Maxillofacial Surgery, Universidad El Bosque, Bogotá, Colombia.
authors.forename: Sergio
authors.initials: S
authors.lastname: Trujillo-Saldarriaga
authors.affiliation: Resident, Department of Oral and Maxillofacial Surgery, Universidad El Bosque, Bogotá, Colombia.
authors.forename: Daniel
authors.initials: D
authors.lastname: Varón-Cardona
authors.affiliation: Chief Resident, Department of Oral and Maxillofacial Surgery, Universidad El Bosque, Bogotá, Colombia.
authors.forename: Jaime
authors.initials: J
authors.lastname: Castro-Núñez
mesh_terms: D000328:Adult; D000368:Aged; D001284:Atrophy; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006304:Health Status; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation; D008297:Male; D008437:Maxilla / Q000473:pathology* / Q000601:surgery; D015523:Maxillary Sinusitis / Q000209:etiology; D008875:Middle Aged; D009957:Oroantral Fistula / Q000209:etiology; D016348:Osseointegration / Q000502:physiology; D010292:Paresthesia / Q000209:etiology; D011183:Postoperative Complications; D012189:Retrospective Studies; D013529:Surgical Wound Dehiscence / Q000209:etiology; D016019:Survival Analysis; D016896:Treatment Outcome; D015050:Zygoma / Q000601:surgery*
chemical_list: D015921:Dental Implants