title: Socio-economic status and orthodontic treatment need.
abstract: OBJECTIVE
  This study aimed to examine the relationship between socio-economic status and both normatively assessed and self perceived need for orthodontic treatment.
  
  
  METHODS
  More than six thousand 14-year-old children were assessed for orthodontic treatment by trained and calibrated examiners. The Index of Orthodontic Treatment Need was the measuring instrument along with a questionnaire which asked: "Do you think your teeth need straightening?"
  
  
  RESULTS
  Normative need for orthodontic treatment (IOTN >3) was more common amongst deprived children than among their affluent counterparts. The same was found for perceived need. However, the children who wanted treatment were not necessarily those who needed it and vice versa.
  
  
  CONCLUSIONS
  Socio-economic status affects normatively measured orthodontic treatment need through, as yet, undefined mechanisms. It also affects a person's perception of need for orthodontic treatment, but these two associations are separate. The mismatch of need and desire for treatment is a problem for orthodontists.
authors.affiliation: Manchester Health Authority, UK.
authors.forename: M
authors.initials: M
authors.lastname: Tickle
authors.forename: E J
authors.initials: EJ
authors.lastname: Kay
authors.forename: D
authors.initials: D
authors.lastname: Bearn
mesh_terms: D000293:Adolescent; D016009:Chi-Square Distribution; D006285:Health Planning / Q000706:statistics & numerical data; D006301:Health Services Needs and Demand / Q000706:statistics & numerical data; D006801:Humans; D008310:Malocclusion / Q000191:economics / Q000453:epidemiology* / Q000523:psychology; D011203:Poverty; D012649:Self Concept; D012923:Social Class; D012959:Socioeconomic Factors; D006113:United Kingdom / Q000453:epidemiology