Effectiveness of Implant Therapy Analyzed in a Swedish Population: Prevalence of Peri-implantitis

J Dent Res. 2016 Jan;95(1):43-9. doi: 10.1177/0022034515608832.


Peri-implantitis is an inflammatory disease affecting soft and hard tissues surrounding dental implants. As the global number of individuals that undergo restorative therapy through dental implants increases, peri-implantitis is considered as a major and growing problem in dentistry. A randomly selected sample of 588 patients who all had received implant-supported therapy 9 y earlier was clinically and radiographically examined. Prevalence of peri-implantitis was assessed and risk indicators were identified by multilevel regression analysis. Forty-five percent of all patients presented with peri-implantitis (bleeding on probing/suppuration and bone loss >0.5 mm). Moderate/severe peri-implantitis (bleeding on probing/suppuration and bone loss >2 mm) was diagnosed in 14.5%. Patients with periodontitis and with ≥4 implants, as well as implants of certain brands and prosthetic therapy delivered by general practitioners, exhibited higher odds ratios for moderate/severe peri-implantitis. Similarly, higher odds ratios were identified for implants installed in the mandible and with crown restoration margins positioned ≤1.5 mm from the crestal bone at baseline. It is suggested that peri-implantitis is a common condition and that several patient- and implant-related factors influence the risk for moderate/severe peri-implantitis (ClinicalTrials.gov NCT01825772).

Keywords: adverse effects; biological complication; endosseous dental implantation; implant-supported dental prosthesis; multivariate analysis; treatment outcome.

Publication types

  • Clinical Trial
  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Alveolar Bone Loss / epidemiology
  • Cross-Sectional Studies
  • Crowns / statistics & numerical data
  • Dental Implants / statistics & numerical data*
  • Dental Implants, Single-Tooth / statistics & numerical data
  • Dental Prosthesis Design / statistics & numerical data
  • Dental Prosthesis, Implant-Supported / statistics & numerical data
  • Female
  • Follow-Up Studies
  • General Practice, Dental / statistics & numerical data
  • Humans
  • Male
  • Mandible / surgery
  • Middle Aged
  • Peri-Implantitis / epidemiology*
  • Periodontal Index
  • Prevalence
  • Retrospective Studies
  • Risk Factors
  • Stomatitis / epidemiology
  • Sweden / epidemiology
  • Treatment Outcome


  • Dental Implants

Associated data

  • ClinicalTrials.gov/NCT01825772