title: Osseointegrated implant for single-tooth replacement: a retrospective multicenter study on routine use in private practice.
abstract: BACKGROUND
  Implant restorations first started with total edentulism. Later, the scientific community gave its approval for restorations in partial edentulism, and only recently some studies confirmed the validity of the treatment for single-tooth replacement.
  
  
  OBJECTIVE
  The purpose of the study was to evaluate implant survival and prosthesis stability of Brånemark implants (titanium screws) when used routinely for single-tooth replacement in all regions.
  
  
  METHODS
  Two hundred and fourteen patients received 252 implants for single-tooth replacement over a period of 8 years at five private clinics in Italy. The patients were treated in accordance with the protocol for Brånemark implants, and the data gathered have been analyzed according to established evaluation methods.
  
  
  RESULTS
  During the observation period, 10 failures were recorded and 229 restorations were carried out. After the first year of loading, the total cumulative survival rate (CSR) was 96%, which then remained stable over the study time. The most frequent complication was loosening of the abutment screws (n = 22), amounting to 35% of all of the complications. This problem was related mainly to earlier types of abutments, whereas the more recent design, CeraOne abutment, showed a low frequency of screw loosening.
  
  
  CONCLUSIONS
  The high survival rate, which is similar to that presented for prospective multicenter studies for single-tooth restorations with Brånemark implants, led to the conclusion that the use of this treatment modality is a reliable treatment for routine use in all oral regions.
authors.affiliation: Biocare AB, Gothenburg, Sweden.
authors.forename: G
authors.initials: G
authors.lastname: Bianco
authors.forename: R
authors.initials: R
authors.lastname: Di Raimondo
authors.forename: G
authors.initials: G
authors.lastname: Luongo
authors.forename: C
authors.initials: C
authors.lastname: Paoleschi
authors.forename: P
authors.initials: P
authors.lastname: Piccoli
authors.forename: C
authors.initials: C
authors.lastname: Piccoli
authors.forename: B
authors.initials: B
authors.lastname: Rangert
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000044:Dental Abutments; D019250:Dental Implants, Single-Tooth / Q000706:statistics & numerical data*; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019239:Practice Patterns, Dentists' / Q000706:statistics & numerical data*; D012189:Retrospective Studies