title: Retrospective analysis of the prevalence of peri-implant diseases in non-smoking patients rehabilitated with a fixed full-arch restoration, supported by two mesial axial and two distal tilted implants.
abstract: BACKGROUND
  The objective of the study was to evaluate the prevalence of peri-implant mucositis and peri-implantitis in non-smoking patients rehabilitated with a fixed prosthesis supported by two axial and two tilted implants.
  
  
  METHODS
  Forty-three patients with a total of 49 rehabilitations were included in the study. Each patient was included in a follow-up schedule consisting in a visit every six months during the first two years and every year thereafter in which professional oral hygiene was performed and data about bleeding on probing, probing depth and bone resorption were collected. Diagnoses of peri-implant mucositis (Bleeding Index>1) and peri-implantitis (Bleeding Index>1, probing depth >4, bone resorption radiographically detectable) were made.
  
  
  RESULTS
  The considered observational time was from 1 to 10 years. The prevalence of peri-implant mucositis detected ranged from 0 to 12.2% of patients (8.7% of implants), while that of peri-implantitis varied between 0 and 9.1% of patients (6.8% of implants) in the different follow-up considered.
  
  
  CONCLUSIONS
  The prevalence of peri-implant mucositis and peri-implantitis was lower than in most of the studies in literature suggesting the feasibility of this kind of rehabilitation, in combination with a strict hygiene recall protocol, in preventing the onset of these diseases.
authors.affiliation: Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy - nicolo.cavalli@unimi.it.
authors.forename: Nicolò
authors.initials: N
authors.lastname: Cavalli
authors.forename: Clotilde
authors.initials: C
authors.lastname: Austoni
authors.forename: Stefano
authors.initials: S
authors.lastname: Corbella
authors.forename: Silvio
authors.initials: S
authors.lastname: Taschieri
authors.forename: Bruno
authors.initials: B
authors.lastname: Barbaro
authors.forename: Francesco
authors.initials: F
authors.lastname: Azzola
authors.forename: Luca
authors.initials: L
authors.lastname: Francetti
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003758:Dental Implantation, Endosseous; D015921:Dental Implants / Q000009:adverse effects; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000453:epidemiology / Q000209:etiology; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation; D008297:Male; D008875:Middle Aged; D009910:Oral Hygiene; D057873:Peri-Implantitis / Q000453:epidemiology* / Q000209:etiology; D015995:Prevalence; D012189:Retrospective Studies; D013280:Stomatitis / Q000453:epidemiology* / Q000209:etiology
chemical_list: D015921:Dental Implants