title: Effectiveness of Implant Therapy Analyzed in a Swedish Population: Prevalence of Peri-implantitis.
abstract: 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).
authors.affiliation: Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden jan.derks@odontologi.gu.se.
authors.forename: J
authors.initials: J
authors.lastname: Derks
authors.affiliation: Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
authors.forename: D
authors.initials: D
authors.lastname: Schaller
authors.affiliation: Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
authors.forename: J
authors.initials: J
authors.lastname: Håkansson
authors.affiliation: Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
authors.forename: J L
authors.initials: JL
authors.lastname: Wennström
authors.affiliation: Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
authors.forename: C
authors.initials: C
authors.lastname: Tomasi
authors.affiliation: Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
authors.forename: T
authors.initials: T
authors.lastname: Berglundh
mesh_terms: D000368:Aged; D016301:Alveolar Bone Loss / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003442:Crowns / Q000706:statistics & numerical data; D015921:Dental Implants / Q000706:statistics & numerical data*; D019250:Dental Implants, Single-Tooth / Q000706:statistics & numerical data; D017267:Dental Prosthesis Design / Q000706:statistics & numerical data; D019094:Dental Prosthesis, Implant-Supported / Q000706:statistics & numerical data; D005260:Female; D005500:Follow-Up Studies; D005792:General Practice, Dental / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008334:Mandible / Q000601:surgery; D008875:Middle Aged; D057873:Peri-Implantitis / Q000453:epidemiology*; D010512:Periodontal Index; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D013280:Stomatitis / Q000453:epidemiology; D013548:Sweden / Q000453:epidemiology; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants
keywords: adverse effects; biological complication; endosseous dental implantation; implant-supported dental prosthesis; multivariate analysis; treatment outcome