title: Long-term Survival of Straumann Dental Implants with TPS Surfaces: A Retrospective Study with a Follow-up of 12 to 23 Years.
abstract: OBJECTIVE
  The aim of this study was to evaluate the long-term dental implant survival rates of Straumann dental implants in a university hospital environment over 12 to 23 years.
  
  
  METHODS
  A total of 388 Straumann dental implants with titanium-sprayed surfaces (TPS) were inserted in 92 patients between 1988 and 1999 in the Department of Oral and Maxillofacial Surgery of the University Hospital Schleswig-Holstein in Kiel, and they were reevaluated with standardized clinical and radiological exams. Kaplan-Meier analyses were performed for individual factors. Cox proportional hazard regression analysis was used to detect the factors influencing long-term implant failure.
  
  
  RESULTS
  The long-term implant survival rate was 88.03% after an observation time of 12.2 to 23.5 years. Cox regression revealed statistically significant influences of the International Team for Implantology (ITI) implantation type (p = .00354) and tobacco smoking (p = .01264) on implant failure. A proportion 82.8% of the patients with implant losses had a medical history of periodontitis. Peri-implantitis was diagnosed in 9.7% of the remaining implants in the long-term survey.
  
  
  CONCLUSIONS
  This study emphasized the long-term rehabilitation capabilities of Straumann dental implants in complex cases. The survival rates after several years constitute important information for patients, as well as for clinicians, in deciding about different concepts of tooth replacement. Patient-related and technical factors - determined before implant placement - could help to predict the risk of implant loss.
authors: Department of Oral and Maxillofacial Surgery, Schleswig-Holstein University Hospital, Kiel, Germany.
authors: Stephan T
authors: ST
authors: Becker
authors: Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
authors: Benedicta E
authors: BE
authors: Beck-Broichsitter
authors: Department of Oral and Maxillofacial Surgery, Schleswig-Holstein University Hospital, Kiel, Germany.
authors: Christian M
authors: CM
authors: Rossmann
authors: Department of Oral and Maxillofacial Surgery, Schleswig-Holstein University Hospital, Kiel, Germany.
authors: Eleonore
authors: E
authors: Behrens
authors: Institute of Medical Informatics and Statistics, Schleswig-Holstein University Hospital, Kiel, Germany.
authors: Arne
authors: A
authors: Jochens
authors: Department of Oral and Maxillofacial Surgery, Schleswig-Holstein University Hospital, Kiel, Germany.
authors: Jörg
authors: J
authors: Wiltfang
mesh_terms: D000328:Adult; D015921:Dental Implants / Q000009:adverse effects; D017267:Dental Prosthesis Design; D005260:Female; D005500:Follow-Up Studies; D005858:Germany; D006785:Hospitals, University; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D009066:Mouth, Edentulous / Q000534:rehabilitation; D057873:Peri-Implantitis / Q000209:etiology; D010518:Periodontitis / Q000209:etiology; D016016:Proportional Hazards Models; D011475:Prosthesis Failure; D012189:Retrospective Studies
chemical_list: D015921:Dental Implants
keywords: Straumann dental implants; implant diameter; implantation type; peri-implantatitis; periodontitis; survival; tobacco