title: A retrospective clinical study of wide-diameter implants used in posterior edentulous areas.
abstract: OBJECTIVE
  The purpose of this study was to examine retrospectively the outcome of wide-diameter dental implants used to retain fixed restorations in the posterior segments of the maxilla and mandible.
  
  
  METHODS
  Fifty-two patients were consecutively treated between 1997 and 2000 with 78 Wide-Platform (WP) Mk II implants in the posterior regions of the maxilla and/or mandible. All treated patients were called for a retrospective examination between September and November 2001. At the examination, data regarding general health and clinical and radiographic parameters were collected according to a strict protocol. Thirty-four women and 18 men with a mean age of 55 years (range 19 to 81 years) participated. Twenty-three WP implants were placed in the maxilla and 55 in the mandible. The mean time in situ was 33 months (range of 11 to 58 months).
  
  
  RESULTS
  Of 78 implants, 8 had been lost by the time of reexamination. Five women lost 1 implant each in the maxilla, and 2 men lost 3 implants in the mandible. The survival rate was 89.8%.
  
  
  CONCLUSIONS
  The results are encouraging because the WP implants were placed in rather unfavorable situations (generally poor bone quality, compromised bone volume, and larger occlusal forces).
  
  
  CONCLUSIONS
  Based on the reported survival rate, wide-diameter implants present an acceptable treatment alternative.
authors.affiliation: Department of Prosthetic Dentistry, Gävle County Hospital, Gävle, Sweden. maud.hultin-mordenfeld@lg.se
authors.forename: Maud Hultin
authors.initials: MH
authors.lastname: Mordenfeld
authors.forename: Anders
authors.initials: A
authors.lastname: Johansson
authors.forename: Måns
authors.initials: M
authors.lastname: Hedin
authors.forename: Camilla
authors.initials: C
authors.lastname: Billström
authors.forename: Kristina Arvidson
authors.initials: KA
authors.lastname: Fyrberg
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003830:Denture, Partial, Fixed; D005260:Female; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies
chemical_list: D015921:Dental Implants