title: Psychosocial impact of hypodontia in children.
abstract: BACKGROUND
  The purpose of this cross-sectional study was to determine the psychosocial impact of hypodontia (multiple dental agenesis) in children and the influence of factors such as severity of hypodontia, number of retained deciduous teeth, age, and sex. The implications of hypodontia for affected patients have been poorly investigated; this, in part, relates to the lack of appropriate measurements to assess the impact of oral conditions on quality of life, particularly among children and adolescents.
  
  
  METHODS
  A total of 123 children (49.6% boys, 50.4% girls; mean age, 13.6 years; SD, 1.6 years) were recruited on the basis of predetermined inclusion criteria to either a hypodontia group or a routine orthodontic group of similar treatment need (index of orthodontic treatment need, dental health component 4 or 5) but without hypodontia. Each patient completed the child perceptions questionnaire and 2 visual analog scales to determine the global effects of hypodontia on esthetics and function.
  
  
  RESULTS
  The mean number of missing teeth in the hypodontia group was 4.52 (SD, 3.33). There were no statistically significant differences in child perceptions questionnaire scores (overall or at domain level) or visual analog scores between the hypodontia and the routine orthodontic groups (P >0.05). Univariable linear regression analyses provided some evidence that difficulty with chewing was associated with the severity of hypodontia (P = 0.030).
  
  
  CONCLUSIONS
  In this sample, hypodontia did not appear to affect the psychosocial status of patients any more than other features of a malocclusion measured with the index of orthodontic treatment need, dental health component 4 or 5. Patients with hypodontia did, however, have more difficulty in chewing when the deciduous teeth associated with the missing permanent teeth had been exfoliated. This highlights the possible importance of retaining deciduous teeth in patients with severe hypodontia.
authors.affiliation: Department of Orthodontics, Eastman Dental Hospital, University College London Hospitals NHS Trust, 256 Gray's Inn Rd, WC1X 8LD, London, United Kingdom. laingemma@hotmail.com
authors.forename: Emma
authors.initials: E
authors.lastname: Laing
authors.forename: Susan J
authors.initials: SJ
authors.lastname: Cunningham
authors.forename: Steven
authors.initials: S
authors.lastname: Jones
authors.forename: David
authors.initials: D
authors.lastname: Moles
authors.forename: Daljit
authors.initials: D
authors.lastname: Gill
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000848:Anodontia / Q000523:psychology*; D002648:Child; D003430:Cross-Sectional Studies; D004955:Esthetics, Dental / Q000523:psychology; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D016014:Linear Models; D008297:Male; D008310:Malocclusion / Q000523:psychology; D008409:Mastication; D020380:Needs Assessment; D011788:Quality of Life; D012649:Self Concept; D012647:Self-Assessment; D012737:Sex Factors; D011795:Surveys and Questionnaires; D014094:Tooth, Deciduous / Q000502:physiology