title: Early loading of sandblasted and acid-etched titanium implants in the edentulous mandible: a prospective 5-year study.
abstract: OBJECTIVE
  The aim of this prospective cohort study was to determine the 5-year implant survival and success rates associated with early loading (6 weeks after nonsubmerged placement) of sandblasted and acid-etched (SLA) Straumann implants in the edentulous mandible. A secondary objective was to determine the peri-implant tissue response and measure alterations in peri-implant crestal bone levels.
  
  
  METHODS
  SLA implants were placed and primarily loaded 6 weeks later with 35 Ncm during abutment placement. The peri-implant bone and mucosal conditions of the participants were monitored radiographically and clinically over a 5-year period.
  
  
  RESULTS
  Fourteen patients received 60 implants. Thirteen patients and 54 implants were examined at the 5-year appointment. Two of 60 implants failed during the healing period, and four implants were lost during follow-up and considered as dropouts. The remaining implants showed favorable clinical and radiographic findings and were considered successfully integrated at the 5-year examination. The mean loss of crestal bone height after 5 years was 0.77 mm (SEM 0.09). This resulted in a 5-year cumulative success rate of 96.7%.
  
  
  CONCLUSIONS
  In this prospective study, the early loading of Straumann implants with the SLA surface in the edentulous mandible after a healing time of 6 weeks provided successful osseointegration with high predictability. Successful integration was maintained for 5 years.
authors.affiliation: Department of Cranio-Maxillofacial Surgery, Maastricht University Clinics, Maastricht, The Netherlands. bernd.lethaus@mumc.nl
authors.forename: Bernd
authors.initials: B
authors.lastname: Lethaus
authors.forename: Jörg
authors.initials: J
authors.lastname: Kälber
authors.forename: Guido
authors.initials: G
authors.lastname: Petrin
authors.forename: Anita
authors.initials: A
authors.lastname: Brandstätter
authors.forename: Dieter
authors.initials: D
authors.lastname: Weingart
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D015331:Cohort Studies; D045662:Dental Etching / Q000379:methods; D015921:Dental Implants; D003774:Dental Plaque Index; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D057893:Immediate Dental Implant Loading; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D053208:Kaplan-Meier Estimate; D008297:Male; D008334:Mandible / Q000601:surgery; D008875:Middle Aged; D016348:Osseointegration; D010512:Periodontal Index; D011446:Prospective Studies; D011859:Radiography; D018709:Statistics, Nonparametric; D013499:Surface Properties; D014025:Titanium; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants; D014025:Titanium