title: Impact of traumatic dental injury on the quality-of-life of children and adolescents: a case-control study.
abstract: OBJECTIVE
  To evaluate the quality-of-life of students in Nova Friburgo, Rio de Janeiro, who suffered traumatic dental injury.
  
  
  METHODS
  A case-control study was carried out by means of structured questionnaire for traumatic dental injury evaluation, clinical oral examination and application of a quality-of-life questionnaire (CPQ11-14), validated in the Portuguese version. This study consisted of 50 children/adolescents (17 cases of traumatic dental injury and 33 controls). Psychometric properties, like internal consistency (Cronbach's Alpha) and test-re-test reliability (ICC), were evaluated. The independent variables were collected for being of interest to the study (dental trauma) or for acting as potential confounding factors (malocclusion, caries). Descriptive and univariate analyses were performed.
  
  
  RESULTS
  The Cronbach's Alpha was 0.90 for case and 0.77 for controls. ICC was 0.99. When the groups were compared, confounding factors showed no statistical difference (p > 0.05). Among the cases CPQ11-14 mean score was 17.59 (SD = 14.01), median = 17.00, whereas among the controls it was 3.09 (SD = 4.42), median = 1.00 (p < 0.01, Mann-Whitney test). When the groups were compared, there was statistical difference frequencies between CPQ11-14 total scale and sub-scales (p < 0.05). The functional limitation and emotional well-being were the sub-scales most affected. The TDI impact was related to 'delay and difficulty in chewing', 'embarrassed or ashamed' and 'caring about what others were thinking of appearance'.
  
  
  CONCLUSIONS
  One can observe a relationship between traumatic dental injury and its impact on quality-of-life. Children and adolescents who suffered traumatic dental injury showed negative experiences and greater functional and emotional impact.
authors.affiliation: Fluminense Federal University, Nova Friburgo, Brazil. liviaazeredo@yahoo.com.br
authors.forename: Leonardo Santos
authors.initials: LS
authors.lastname: Antunes
authors.forename: Patricia Faria
authors.initials: PF
authors.lastname: Debossan
authors.forename: Ligia Spitz
authors.initials: LS
authors.lastname: Bohrer
authors.forename: Fernanda Volpe
authors.initials: FV
authors.lastname: Abreu
authors.forename: Luis Eduardo Lavigne Paranhos
authors.initials: LE
authors.lastname: Quintanilha
authors.forename: Livia Azeredo Alves
authors.initials: LA
authors.lastname: Antunes
mesh_terms: D000293:Adolescent; D016022:Case-Control Studies; D002648:Child; D006801:Humans; D011788:Quality of Life; D011795:Surveys and Questionnaires; D018677:Tooth Injuries / Q000503:physiopathology* / Q000523:psychology