title: 26-year follow-up of screw-retained fixed dental prostheses supported by machined-surface Brånemark implants: a case report.
abstract: BACKGROUND
  Rough-surface implants have become very popular during the last 10 years due to greater reported bone-implant-contact and bone volume between implant threads compared to machined-surface implants.
  
  
  OBJECTIVE
  The aim of this clinical report is to present the 26-year clinical outcomes of machined-surface implants supporting screw-retained fixed dental prostheses in a 77-year-old woman. A 51-year-old woman received five mandibular and six maxillary implants supporting screw-retained fixed dental prostheses. The original machined-surface regular platform Branemark implants were placed using a two-stage surgical approach.
  
  
  METHODS
  No implants were lost, and average marginal bone levels between the implant platform and the first bone-implant contact for maxillary and mandibular implants were 3.3 +/- 0.6 mm and 1.7 +/- 0.3 mm after 26 years. The following prosthetic complications were recorded during the follow up period; a) broken acrylic denture tooth (four times), b) loose prosthetic screw (three times), c) loose abutment screw (two times).
  
  
  CONCLUSIONS
  This case report shows that machined-surface dental implants can successfully support screw-retained fixed dental prostheses over 26 years, which makes dental implants an important dental treatment option compared to the traditional prosthetic treatment methods, especially in elderly edentulous patients.
authors.affiliation: Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio Dental School, San Antonio, Texas 78229-3900, USA. turkyilmaz@uthscsa.edu
authors.forename: Ilser
authors.initials: I
authors.lastname: Turkyilmaz
mesh_terms: D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D000539:Alveolar Process / Q000254:growth & development; D015921:Dental Implants; D003775:Dental Polishing; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention / Q000295:instrumentation*; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D013499:Surface Properties
chemical_list: D015921:Dental Implants