title: Fixed implant-retained rehabilitation of the edentulous maxilla: 11-year results of a prospective study.
abstract: OBJECTIVE
  The aim of the present study was to assess long-term survival and success rates of implants in the edentulous maxilla restored with an implant-supported fixed prosthesis.
  
  
  METHODS
  Seventeen edentulous patients received six to eight implants and implant-supported fixed prostheses by one surgeon. Yearly recalls were conducted by two examiners over a period of 11 years. Survival and success rates (biological complications) were determined; marginal bone loss was examined radiographically. Furthermore, microbiological tests as well as test for interleukin-1 composite genotype were assessed and potential risk factors were evaluated.
  
  
  RESULTS
  After a mean time of 11.26 years, 15 patients of 17 could be reexamined. Out of 94 implants, three were lost in one patient. Mean marginal bone loss reached 0.88 mm, two patients (at seven implants) showed bone loss of ≥3.2 mm. Survival rate of implants reached 96.8%. Success rates on implant level hit 92.6% according to the criteria of Albrektsson and colleagues and 83.0% in accordance with Karoussis and colleagues. One prosthesis had to be renewed.
  
  
  CONCLUSIONS
  Within the limitation of this study, restoration of the edentulous maxilla with an implant-supported fixed prosthesis represents an effective tool for rehabilitation over a period of 11 years.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University Hospital Heidelberg, Heidelberg, Germany. christian.mertens@med.uni-heidelberg.de
authors.forename: Christian
authors.initials: C
authors.lastname: Mertens
authors.forename: Helmut G
authors.initials: HG
authors.lastname: Steveling
authors.forename: Kathrin
authors.initials: K
authors.lastname: Stucke
authors.forename: Bernadette
authors.initials: B
authors.lastname: Pretzl
authors.forename: Amelie
authors.initials: A
authors.lastname: Meyer-Bäumer
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D005260:Female; D005838:Genotype; D006801:Humans; D007375:Interleukin-1 / Q000235:genetics; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008297:Male; D008437:Maxilla; D008875:Middle Aged; D011446:Prospective Studies; D011859:Radiography; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants; D007375:Interleukin-1