title: Effect of incisor position on the self-perceived psychosocial impacts of malocclusion among Chinese young adults.
abstract: OBJECTIVE
  To evaluate the impact of the incisor position on the self-perceived psychosocial impacts of malocclusion among Chinese young adults.
  
  
  METHODS
  This cross-sectional study included a convenience sample of 17.1- to 22.3-year-old young adults (n = 1005). The five groups represented were normal occlusion as well as incisor Class I, Class II/1, Class II/2, and Class III malocclusion. For clinical assessment, the incisor relationship was evaluated according to the British Standards Institute Incisor Classification, and the self-perception of dental esthetics was assessed using the Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ). Statistical analysis involved the analysis of variance and Tukey multiple-comparison post hoc tests.
  
  
  RESULTS
  Psychosocial impacts were different among the five groups for the four PIDAQ domains (P < .001 for all four domains). Statistically significant differences were found between the four malocclusion groups and the normal occlusion group in all four domains (P < .001 for all four domains). Furthermore, statistically significant differences were found between four malocclusion groups.
  
  
  CONCLUSIONS
  All four malocclusion groups had more severe psychosocial impacts than the normal occlusion group in the four PIDAQ domains. Statistically significant differences were also found between the four malocclusion groups; these malocclusion groups ranked by score, highest to lowest, were Class III, Class II/1, Class II/2, and Class I.
authors.affiliation: Key Laboratory for Oral Biomedical Engineering of the Ministry of Education, Department of Orthodontics, Hospital and School of Stomatology, Wuhan University, Wuhan, Hubei, China.
authors.forename: Xia
authors.initials: X
authors.lastname: Dahong
authors.forename: Cheng
authors.initials: C
authors.lastname: Xiangrong
authors.forename: Liu
authors.initials: L
authors.lastname: Ying
authors.forename: Liang
authors.initials: L
authors.lastname: Yusong
authors.forename: Guo
authors.initials: G
authors.lastname: Ying
authors.forename: Sun
authors.initials: S
authors.lastname: Yan
mesh_terms: D000293:Adolescent; D001294:Attitude to Health; D002681:China; D003430:Cross-Sectional Studies; D003766:Dental Occlusion; D004955:Esthetics, Dental; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology*; D007398:Interpersonal Relations; D008297:Male; D008310:Malocclusion / Q000473:pathology / Q000523:psychology*; D008311:Malocclusion, Angle Class I / Q000473:pathology / Q000523:psychology; D008312:Malocclusion, Angle Class II / Q000473:pathology / Q000523:psychology; D008313:Malocclusion, Angle Class III / Q000473:pathology / Q000523:psychology; D012649:Self Concept; D057566:Self Report; D055815:Young Adult