title: Effect of dark discolouration and enamel/dentine fracture on the oral health-related quality of life of pre-schoolers.
abstract: OBJECTIVE
  To determine the effect of different types of dental trauma on oral health-related quality of life (OHRQoL) among pre-school children.
  
  
  METHODS
  Four hundred fifty-nine Brazilian pre-schoolers aged 3-5 years were submitted to an oral examination in the school environment for the evaluation of dental trauma using the criteria proposed by Andreasen et al. (2007). Parents answered a questionnaire on the OHRQoL of the children using the Early Childhood Oral Health Impact Scale (ECOHIS) and another one on socio-demographic characteristics of the children and their families. The questionnaires were sent to the parents to be answered at home. Descriptive statistics, Mann-Whitney test and Poisson regression were used for statistical analysis.
  
  
  RESULTS
  Children with dark discolouration and enamel-dentine fracture without pulp exposure had higher mean ECOHIS scores than those without these alterations. The multivariate regression analysis demonstrated that pre-school children with dark discolouration (PR 1.79; 95% CI 1.24-2.58) and enamel-dentine fracture without pulp exposure (PR 1.89; 95% CI 1.22-2.92) had a higher impact on quality of life than those without these alterations.
  
  
  CONCLUSIONS
  Dark discolouration and enamel-dentine fracture without pulp exposure were associated with a negative impact on the life of pre-schoolers.
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. joanaramosjorge@gmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Ramos-Jorge
authors.affiliation: Universidade Federal dos Vales do Jequitinhonha e Mucuri, Rua da Glória, 187, Diamantina, MG, 39100-000, Brazil.
authors.forename: A C
authors.initials: AC
authors.lastname: Sá-Pinto
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
authors.forename: I
authors.initials: I
authors.lastname: Almeida Pordeus
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
authors.forename: S
authors.initials: S
authors.lastname: Martins Paiva
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
authors.forename: C
authors.initials: C
authors.lastname: Castro Martins
authors.affiliation: Universidade Federal dos Vales do Jequitinhonha e Mucuri, Rua da Glória, 187, Diamantina, MG, 39100-000, Brazil.
authors.forename: M L
authors.initials: ML
authors.lastname: Ramos-Jorge
mesh_terms: D001938:Brazil / Q000453:epidemiology; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D003743:Dental Enamel / Q000293:injuries*; D003804:Dentin / Q000293:injuries*; D005260:Female; D006801:Humans; D008297:Male; D009909:Oral Health; D011788:Quality of Life; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014075:Tooth Discoloration / Q000453:epidemiology / Q000523:psychology*; D014082:Tooth Fractures / Q000453:epidemiology / Q000523:psychology*
keywords: Incisor; Pre-school children; Quality of life; Tooth injuries