title: A 1-year clinical report of a one-piece implant abutment.
abstract: OBJECTIVE
  Solid one-piece standard and conical abutments, which do not involve the external implant hex when seated, have been designed. The present clinical study represents a 1-year follow-up of the use of these abutments for anchorage of implant-supported fixed prostheses for oral rehabilitation of 36 completely and eight partially edentulous patients.
  
  
  METHODS
  After 1 year of loading, the implant-supported dentures were removed, and the seating of the 214 one-piece abutments was inspected clinically and radiographically.
  
  
  RESULTS
  After 1 year of loading, no loose abutments were observed. One complication was reported; it involved fracture of two abutment screws within the same fixed denture. Prosthesis mobility and gold screw loosening accompanied this complication. Ninety-one percent of the patients exhibited healthy gingiva, and 9% showed erythema/edema. No periimplantitis was identified.
  
  
  CONCLUSIONS
  The results of this study--healthy marginal tissue, a mean bone loss of 0.3+/-0.6 mm, and no abutment retightening 1 year after loading--support the use of the one-piece abutment design in implant-supported screw-retained restorations.
authors.affiliation: Gävle Dental Implant Center, Sweden. bill.carlson@pi.se
authors.forename: B
authors.initials: B
authors.lastname: Carlson
authors.forename: G
authors.initials: G
authors.lastname: Jönsson
authors.forename: L
authors.initials: L
authors.lastname: Sandahl
authors.forename: T
authors.initials: T
authors.lastname: Nordin
authors.forename: P
authors.initials: P
authors.lastname: Hising
authors.forename: P
authors.initials: P
authors.lastname: Nelvig
authors.forename: C
authors.initials: C
authors.lastname: Branting
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000145:classification; D016009:Chi-Square Distribution; D000044:Dental Abutments; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003779:Denture Design; D003781:Denture Retention; D003830:Denture, Partial, Fixed; D004487:Edema / Q000145:classification; D004890:Erythema / Q000145:classification; D005260:Female; D005500:Follow-Up Studies; D005881:Gingiva / Q000033:anatomy & histology; D005882:Gingival Diseases / Q000145:classification; D006047:Gold Alloys; D006801:Humans; D007575:Jaw, Edentulous / Q000000981:diagnostic imaging / Q000534:rehabilitation; D007576:Jaw, Edentulous, Partially / Q000000981:diagnostic imaging / Q000534:rehabilitation; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013223:Statistics as Topic; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants; D006047:Gold Alloys