title: Sociodemographic differences in oral health-related quality of life related to dental caries in thai school children.
abstract: OBJECTIVE
  This study aimed to assess associations between sociodemographic and oral health behavioural factors with dental caries and oral health-related quality of life (OHRQoL) attributed to dental caries in a national representative sample of 12- and 15-year-old Thai children.
  
  
  METHODS
  A representative subsample from the sixth Thailand National Oral Health Survey, 1,063 12-year-olds and 811 15-year-olds, completed a questionnaire on sociodemographic and behavioural information and were orally examined and interviewed about OHRQoL using the Child-OIDP or OIDP indexes. Associations of sociodemographic and behavioural factors with DMFT and Condition-Specific impacts (CS-impacts) attributed to dental caries were investigated using Chi-square tests and regressions.
  
  
  RESULTS
  For both groups, DMFT scores were associated with gender, geographic area and recently receiving dental treatment. Geographic area was the only sociobehavioural factor independently associated with CS-impacts. Dental caries accounted for the significant associations of sugary snacks and drinks consumption with CS-impacts. Significant associations of CS-impacts with consuming crispy snacks in 12-year-olds and fizzy drinks in 15-year-olds became non-significant when DT was entered into models.
  
  
  CONCLUSIONS
  There were considerable geographic differences in DMFT and CS-impacts attributed to dental caries among Thai children.
authors.affiliation: Department of Community Dentistry Chulalongkorn University, Bangkok, Thailand. sudaduang.k@chula.ac.th
authors.forename: S
authors.initials: S
authors.lastname: Krisdapong
authors.forename: P
authors.initials: P
authors.lastname: Prasertsom
authors.forename: K
authors.initials: K
authors.lastname: Rattanarangsima
authors.forename: A
authors.initials: A
authors.lastname: Sheiham
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D002253:Carbonated Beverages; D002648:Child; D004245:DMF Index; D003729:Dental Care; D003731:Dental Caries / Q000523:psychology*; D003793:Dental Restoration, Permanent / Q000523:psychology; D019422:Dietary Sucrose / Q000008:administration & dosage; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D009909:Oral Health; D011788:Quality of Life; D012423:Rural Health; D012737:Sex Factors; D062410:Snacks; D012959:Socioeconomic Factors; D013785:Thailand; D016388:Tooth Loss / Q000523:psychology; D014099:Toothbrushing; D014100:Toothpastes / Q000627:therapeutic use; D014504:Urban Health
chemical_list: D019422:Dietary Sucrose; D014100:Toothpastes