title: Prevalence of peri-implantitis in patients with implant-supported fixed prostheses.
abstract: OBJECTIVE
  The purpose of this study was to evaluate periimplantitis prevalence in patients using implant-supported fixed prostheses that did not have any routine maintenance care.
  
  
  METHODS
  A total of 161 implants (27 patients) were evaluated in patients using implant-supported fixed prostheses. Collected data included information related to patient general health and local factors such as characteristics of implants, time in function, type of loading, positioning, Modified Bleeding Index, bacterial plaque, bleeding on probing (BOP), marginal recession, probing depth (PD), keratinized mucosa, and radiographic bone loss (BL). Factors related to the prostheses were also evaluated. The exclusion criteria were patients that have had any follow-up visit for plaque control of the prosthesis and/or the implants.
  
  
  RESULTS
  From a total of 161 implants, 116 (72%) presented without peri-implantitis (PD > 4 mm + BOP + BL > 2 mm) while 45 (28%) had some sign of the disease. Implants placed in the maxilla were 2.98 times more likely to develop the disease (P < .05). Moreover, patients aged ≤ 60 years old were 3.24 times more likely to develop peri-implantitis (P < .05). Another analysis with statistical relevance (P < .05) was that implants with less than 3 mm interimplant distance were three times more likely to have peri-implantitis. There was no statistical relevance considering other analyses.
  
  
  CONCLUSIONS
  It can be concluded that patients aged ≤ 60 years have a greater chance of presenting periimplantitis, as well as for implants positioned in the maxilla and those placed with an interimplant distance < 3 mm.
authors.forename: Guenther
authors.initials: G
authors.lastname: Schuldt Filho
authors.forename: Haline Renata
authors.initials: HR
authors.lastname: Dalago
authors.forename: João Gustavo
authors.initials: JG
authors.lastname: Oliveira de Souza
authors.forename: Kyle
authors.initials: K
authors.lastname: Stanley
authors.forename: Sascha
authors.initials: S
authors.lastname: Jovanovic
authors.forename: Marco Aurélio
authors.initials: MA
authors.lastname: Bianchini
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000453:epidemiology; D001938:Brazil / Q000453:epidemiology; D003774:Dental Plaque Index; D019094:Dental Prosthesis, Implant-Supported / Q000706:statistics & numerical data*; D003779:Denture Design / Q000706:statistics & numerical data; D005260:Female; D005500:Follow-Up Studies; D005889:Gingival Recession / Q000453:epidemiology; D006801:Humans; D007633:Keratins; D008297:Male; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D009910:Oral Hygiene / Q000706:statistics & numerical data; D057873:Peri-Implantitis / Q000453:epidemiology*; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000453:epidemiology; D015995:Prevalence; D016300:Radiography, Bitewing / Q000706:statistics & numerical data; D019252:Radiography, Dental, Digital / Q000706:statistics & numerical data; D013997:Time Factors
chemical_list: D007633:Keratins