title: Associations between social inequality and tooth loss in a household sample of elderly Thai people aged ≥60 years old.
abstract: OBJECTIVE
  To assess the relationship between social inequality and the number of remaining teeth in an elderly Thai population.
  
  
  BACKGROUND
  Having twenty or more remaining teeth is an important indicator of optimal oral health in the elderly.
  
  
  METHODS
  The data for this study were derived from the Survey of Older Persons in Thailand, conducted by the National Statistical Office, based on face-to-face interviews with people aged ≥60. The total sample was 30 427. The oral health measure was self-reported remaining number of teeth. Income, education and possession of durable goods were utilised as measures of social inequality.
  
  
  RESULTS
  More than half of the sample (57.0%) was women. The majority (73.2%) was in the age range 60-74 years old. Less than a fifth (15.5%) had 7 or more years of education. A third earned <20 000 Thai Baht (THB) per annum (defined as poor). More than half (52.8%) of the sample had <20 remaining teeth. There was a link between social inequalities and tooth loss. In the adjusted model, elderly people, who were older than 75, who were not under a married status, had a lower level of education, had a lower income, and who did not own luxury goods, were 2.84 (CI 95% 2.66-3.03), 1.31 (CI 95% 1.21-1.41), 1.44 (CI 95% 1.34-1.56), 1.12 (CI 95% 1.13-1.29) and 1.21 (CI 95% 1.13-1.29) times more likely to have 19 or fewer teeth remaining, respectively.
  
  
  CONCLUSIONS
  Social inequality is related to the number of remaining teeth in elderly Thai people.
authors.affiliation: Center of Excellence in Dental Public Health, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: Patcharawan
authors.initials: P
authors.lastname: Srisilapanan
authors.affiliation: Center of Excellence in Dental Public Health, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: Narumanas
authors.initials: N
authors.lastname: Korwanich
authors.affiliation: Australian Research Centre for Population Oral Health (ARCPOH), School of Dentistry, The University of Adelaide, Adelaide, SA, Australia.
authors.forename: Ratilal
authors.initials: R
authors.lastname: Lalloo
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012959:Socioeconomic Factors; D013785:Thailand / Q000453:epidemiology; D016388:Tooth Loss / Q000191:economics / Q000453:epidemiology*
keywords: Thailand.; elderly; remaining teeth; social inequality; survey; tooth loss