title: Long-term retrospective evaluation of the peri-implant bone level in onlay grafted patients with iliac bone from the anterior superior iliac crest.
abstract: OBJECTIVE
  The purpose of the present study was to evaluate crestal bone level changes around dental implants after iliac bone augmentation in the long term.
  
  
  METHODS
  A total of 32 partially edentulous/edentulous patients (mean age, 52 years; range, 22-70 years) and a remaining bone volume of less than 5 mm of the alveolar ridge underwent maxillary or mandibular iliac bone graft augmentation. All patients received spaced standardized radiological examination for evaluation of peri-implant crestal bone loss.
  
  
  RESULTS
  The grafting procedure was successfully performed in all patients. A total of 150 implants were placed. The mean observation period was 69 months (range, 12-165 months; success rate for maxilla, 96%; success rate for mandible, 92%). The mean amount of crestal bone loss after 10 years was 1.8 mm. A significant difference between gender and crestal bone loss was shown, but no influence was found regarding the implant system, diameter of implant, and age of the patients.
  
  
  CONCLUSIONS
  In patients with atrophic jaws, a sufficient long-term reconstruction can be achieved with the combination of iliac onlay grafting and dental implants. The results demonstrate high success rates and a stable peri-implant bone level in the long term.
authors.affiliation: Department of Oral and Craniomaxillofacial Surgery, Center for Dental Medicine, University Medical Center Freiburg, Hugstetter Straße 55, D-79106 Freiburg, Germany. Electronic address: tobias.fretwurst@uniklinik-freiburg.de.
authors.forename: T
authors.initials: T
authors.lastname: Fretwurst
authors.affiliation: Department of Oral and Maxillofacial Surgery, Navigation and Robotics, Charité Campus Virchow, Berlin, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Nack
authors.affiliation: Department of Oral and Maxillofacial Surgery, Navigation and Robotics, Charité Campus Virchow, Berlin, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Al-Ghrairi
authors.affiliation: Department of Oral and Maxillofacial Surgery, Navigation and Robotics, Charité Campus Virchow, Berlin, Germany.
authors.forename: J D
authors.initials: JD
authors.lastname: Raguse
authors.affiliation: Department of Oral and Craniomaxillofacial Surgery, Center for Dental Medicine, University Medical Center Freiburg, Hugstetter Straße 55, D-79106 Freiburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Stricker
authors.affiliation: Department of Oral and Craniomaxillofacial Surgery, Center for Dental Medicine, University Medical Center Freiburg, Hugstetter Straße 55, D-79106 Freiburg, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Schmelzeisen
authors.affiliation: Department of Oral and Craniomaxillofacial Surgery, Center for Dental Medicine, University Medical Center Freiburg, Hugstetter Straße 55, D-79106 Freiburg, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Nelson
authors.affiliation: Department of Oral and Maxillofacial Surgery, Navigation and Robotics, Charité Campus Virchow, Berlin, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Nahles
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D000539:Alveolar Process / Q000473:pathology*; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D064592:Autografts / Q000637:transplantation; D016025:Bone Transplantation / Q000379:methods*; D000069343:Bone-Implant Interface / Q000473:pathology*; D015921:Dental Implants; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007085:Ilium / Q000601:surgery; D007575:Jaw, Edentulous / Q000601:surgery; D007576:Jaw, Edentulous, Partially / Q000601:surgery; D008137:Longitudinal Studies; D008297:Male; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D019252:Radiography, Dental, Digital / Q000379:methods; D011862:Radiography, Panoramic / Q000379:methods; D012189:Retrospective Studies; D060053:Transplant Donor Site / Q000601:surgery; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D015921:Dental Implants
keywords: Augmentation; Autogenous; Bone resorption; Crestal bone level; Extreme atrophy; Long-term