Dental caries can influence children’s quality of life in activities such as eating, sleeping and talking, as well as their general health [15, 27]. The results of this study demonstrate that children with dental experience (DMFT/dmft 1 to 10) are more likely to suffer a high negative impact on their OHRQoL than those without dental caries experience (DMFT/dmft = 0). This finding is important because it proves that public health policies should be directed towards the most vulnerable groups. In Brazil, 20% of the school population concentrates about 60% of the disease burden .