title: Child oral health-related quality of life (COHQoL), enamel defects of the first permanent molars and caries experience among children in Western Australia.
abstract: Published reports suggest that children with enamel defects, especially where enamel is missing or breaking down, experience considerable discomfort and are generally more fearful of dental treatment. However, children's oral health-related quality of life in relation to enamel defects has not been reported. The aim of this study was to examine the association between oral health-related quality of life among children (COHQoL) with enamel defects of the first permanent molars and deciduous caries experience.
  
  
  METHODS
  Children attending pre-primary schools in metropolitan Perth, Western Australia, were recruited and classified for enamel defects using the modified Developmental Defects of Enamel index. Caries experience of deciduous molars and canines was also recorded. Parents completed a child oral health-related quality of life questionnaire. Data were analysed using Kruskal-Wallis, Spearman's rank correlation, chi-square, multiple linear regression and ordered logistic regression to test the factors for their influence on the COHQoL.
  
  
  RESULTS
  From the 550 children assessed (mean age 7.2 years) 522 COHQoL questionnaires were returned. Mean COHQoL score was 8.9 (sd 8.8). Bivariate tests showed no association of COHQoL with enamel defect status of the first permanent molars. COHQoL was associated with dmft (mean dmft 1.96, sd 2.62). Higher caries experience children had poorer reported oral health-related quality of life.
  
  
  CONCLUSIONS
  The presence of enamel defects in the first permanent molars did not affect the children's oral health-related quality of life.
authors.affiliation: Dental Health Service, Health Department of Western Australia, Perth, Western Australia. parrow@ozemail.com.au
authors.forename: P
authors.initials: P
authors.lastname: Arrow
mesh_terms: D016009:Chi-Square Distribution; D002648:Child; D002675:Child, Preschool; D004245:DMF Index; D003731:Dental Caries / Q000523:psychology*; D003744:Dental Enamel Hypoplasia / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008963:Molar / Q000473:pathology; D009909:Oral Health; D010290:Parents / Q000523:psychology; D011788:Quality of Life; D012044:Regression Analysis; D012959:Socioeconomic Factors; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires; D014904:Western Australia