Gains in children's dental health differ by socioeconomic position: evidence of widening inequalities in southern Brazil

UnlabelledOral health inequalities are the measures by which equity in oral health is tracked. Despite widespread improvement in children's dental health globally, substantial socio-economic disparities persist and may be worsening.ObjectivesQuantify 10-year changes in child caries occurrence by socio-economic position in a Southern Brazilian city and compare oral health inequalities over time.MethodsRepresentative surveys of dental caries in children (age 0; severity: mean dmft) using absolute measures (difference and Slope Index of Inequality) and relative measures (ratio and Relative Index of Inequality).ResultsComparing 2010 to 2000, caries occurrence was lower in all socio-economic strata. However, reductions were more pronounced among socio-economically advantaged groups, yielding no improvement in children's oral health disparities. Some disparity indicators were consistent with increasing inequality.ConclusionsOverall, dental caries levels among children in Canoas improved, but inequalities in disease distribution endured. Concerted public health efforts targeting socio-economically disadvantaged groups are needed to achieve greater equity in children's oral health.