title: Risk factors for tooth loss in the institutionalised elderly; a six-year cohort study.
abstract: OBJECTIVE
  The aim of this study was to examine risk factors for tooth loss and edentulism in institutionalised elderly people.
  
  
  METHODS
  Six-year prospective cohort study.
  
  
  METHODS
  Twenty nine of the 30 institutions for elderly people in Kitakyushu, Japan.
  
  
  METHODS
  Four hundred and eighteen of the 1,096 subjects who were dentate at the baseline examination.
  
  
  METHODS
  Factors that influenced tooth loss and edentulism.
  
  
  RESULTS
  In both sexes, older subjects had fewer remaining teeth at baseline. Males lost more teeth than females, and edentulism was also more likely in males than in females. Stepwise multiple linear regression analysis showed that the number of teeth, number of decayed teeth, periodontal pocket depth, and plaque index were significant predictors for the number of teeth lost. The incidence of edentulism was higher in males than in females. Stepwise multiple logistic regression analysis revealed that poorer mental health status, fewer teeth, having deep periodontal pocket, and poorer oral hygiene status were independently associated with the six-year incidence of edentulism.
  
  
  CONCLUSIONS
  Tooth loss in institutionalised elderly people in Japan is related to both poor oral health status and poor mental health status.
authors.affiliation: Department of Preventive Dentistry, Kyushu University Faculty of Dental Science, Fukuoka, Japan. shimadha@mbox.nc.kyushu-u.ac.jp
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Shimazaki
authors.forename: Inho
authors.initials: I
authors.lastname: Soh
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Koga
authors.forename: Hideo
authors.initials: H
authors.lastname: Miyazaki
authors.forename: Tadamichi
authors.initials: T
authors.lastname: Takehara
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D003731:Dental Caries / Q000150:complications; D003774:Dental Plaque Index; D003817:Dentition; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007326:Institutionalization; D016014:Linear Models; D016015:Logistic Models; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D009066:Mouth, Edentulous / Q000209:etiology; D009911:Oral Hygiene Index; D010514:Periodontal Pocket / Q000150:complications; D011446:Prospective Studies; D012307:Risk Factors; D012737:Sex Factors; D016388:Tooth Loss / Q000209:etiology*