title: Survival and success rates of 3i implants in partially edentulous patients: results of a prospective study with up to 84-months' follow-up.
abstract: OBJECTIVE
  To evaluate the long-term performance of machined screw implants placed in partially edentulous patients.
  
  
  METHODS
  Eighty-six patients received a total of 214 machined implants (3i Implant Innovations). Seventy-six patients received 112 crowns and fixed partial dentures. The implants were placed in both the maxilla and the mandible. Using standardized radiographs, the peri-implant bone level was evaluated at the time of delivery of the final restorations and at up to 8 follow-up examinations.
  
  
  RESULTS
  Nine implants failed before and 6 implants during functional loading. Further, 30 implants were classified as biologically unsuccessful. The estimated survival rate of the implants was 93% after 84 months (confidence interval 88% to 97%). The estimated success rate was 83.3% after 84 months (confidence interval 76.4% to 90.2%).
  
  
  CONCLUSIONS
  Machined 3i implants can be used for the replacement of missing teeth in partially edentulous patients.
authors.affiliation: Department of Prosthodontics, Dental School, University Hospital, Freiburg, Germany. marko.knauf@uniklinik-freiburg.de
authors.forename: Marko
authors.initials: M
authors.lastname: Knauf
authors.forename: Thomas
authors.initials: T
authors.lastname: Gerds
authors.forename: Robert
authors.initials: R
authors.lastname: Muche
authors.forename: Jörg R
authors.initials: JR
authors.lastname: Strub
mesh_terms: D001862:Bone Resorption / Q000000981:diagnostic imaging*; D015921:Dental Implants; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000601:surgery*; D008297:Male; D011446:Prospective Studies; D011859:Radiography; D012044:Regression Analysis; D016019:Survival Analysis