AIM: The aim of this study was to quantify the impact of @entity130 ( @entity130 ) on oral-health-related quality of life (OHRQoL) of preschool @entity1 , when enamel @entity174 were either included or excluded within the category of @entity130 . MATERIAL AND METHODS: An oral health survey was undertaken of preschool @entity1 , age 1-5  years attending public nurseries in Canoas, Brazil. @entity1 were examined for @entity130 , @entity1547 , and @entity3232 . Parents were interviewed on their perception of their @entity1 's OHRQoL (Early Childhood Oral Health Impact Scale-ECOHIS) and their sociodemographic background. Multivariable Poisson regression models with robust variance were fitted to assess the impacts of @entity130 (including and excluding enamel @entity174 ) on OHRQoL. RESULTS: A full dataset was collected from 76% of the eligible population. The prevalence of @entity130 was 13.4% (171/1275). The prevalence of any impact (ECOHIS  >=   1) was significantly higher in @entity1 with crown discoloration (29.7%), enamel/dentin @entity174 (29.2%), and @entity155 (73.3%), compared to @entity1 with enamel @entity174 (16.2%) or without a @entity130 (15.8%) (P  <  0.001). Enamel @entity174 were the most prevalent @entity130 (40%) but halved the proportion of @entity1 with a reported impact from their @entity130 . The mean increase in OHRQoL impact for those @entity1 with a @entity130 was 1.59 (95%CI 1.20-2.10) when enamel @entity174 was included, and 1.86 (95%CI 1.39-2.50) when it was excluded. CONCLUSION: Enamel @entity174 have no significant impact on young @entity1 's quality of life. Including enamel @entity174 within the diagnosis of @entity130 increases the prevalence of @entity130 while reducing the OHRQoL impact of @entity130 for the primary dentition.

@entity174 in the primary dentition has no impact on XXXX 's quality of life: implications for clinicians and researchers.

@entity1 :: ('9606', 'Species') :: ['children', 'Children', 'child'] @entity174 :: ('MESH:D050723', 'Disease') :: ['fractures', 'fracture'] @entity3232 :: ('MESH:D008310', 'Disease') :: ['malocclusion'] @entity1547 :: ('MESH:D003731', 'Disease') :: ['dental caries'] @entity155 :: ('MESH:D014084', 'Disease') :: ['avulsion'] @entity130 :: ('MESH:D014947', 'Disease') :: ['traumatic dental injuries', 'TDI']
@entity1 :: (9606,Species) :: ['children']
