title: The prevalence of peri-implant diseases for two-piece implants with an internal tube-in-tube connection: a cross-sectional analysis of 512 implants.
abstract: OBJECTIVE
  To assess the prevalence of peri-implant health or disease for a two-piece implant system with a tube-in-tube internal connection on the short-, medium- and long term.
  
  
  METHODS
  For this cross-sectional analysis, 238 patients with a total of n = 512 implants were screened in six private practices and one university clinic in Germany. Peri-implant health and disease was assessed according to strict case definitions. Binary logistic regression was used to assess the correlation with systemic factors.
  
  
  RESULTS
  After a median function time of 23 months, the prevalence of peri-implant mucositis and peri-implantitis amounted to 41.6% and 13.9%, corresponding to 35.6% and 7.6% at the implant level, respectively. Factors plaque (odds ratio [OR], 8.415) and gender "male" (OR, 2.003) were significantly correlated with the event peri-implant mucositis. The event peri-implantitis was significantly correlated with plaque (OR, 9.250) and smoking (OR, 2.679).
  
  
  CONCLUSIONS
  The prevalence of peri-implant diseases was correlated with patient-specific factors.
authors.affiliation: Department of Oral Surgery, Universitätsklinikum Düsseldorf, Düsseldorf, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Schwarz
authors.affiliation: Department of Orthodontics, Universitätsklinikum Düsseldorf, Düsseldorf, Germany.
authors.forename: Kathrin
authors.initials: K
authors.lastname: Becker
authors.affiliation: Department of Oral Surgery, Universitätsklinikum Düsseldorf, Düsseldorf, Germany.
authors.forename: Narja
authors.initials: N
authors.lastname: Sahm
authors.affiliation: Graduates of the Master of Science in Oral Implantology Program, Steinbeis University, Berlin, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Horstkemper
authors.affiliation: Graduates of the Master of Science in Oral Implantology Program, Steinbeis University, Berlin, Germany.
authors.forename: Khalifa
authors.initials: K
authors.lastname: Rousi
authors.affiliation: Department of Oral Surgery, Universitätsklinikum Düsseldorf, Düsseldorf, Germany.
authors.forename: Jürgen
authors.initials: J
authors.lastname: Becker
mesh_terms: D003430:Cross-Sectional Studies; D015921:Dental Implants; D003773:Dental Plaque; D017267:Dental Prosthesis Design; D005858:Germany / Q000453:epidemiology; D006801:Humans; D052016:Mucositis / Q000453:epidemiology*; D057873:Peri-Implantitis / Q000453:epidemiology*; D015995:Prevalence; D017678:Sex Distribution
chemical_list: D015921:Dental Implants
keywords: epidemiology; peri-implant disease; prevalence