[Social determinants and adult oral health in Brazilian state capitals].

Objective: To assess the correlation between the social determinants of oral health (SDOH) index and social indicators, indicators of oral health, and intermediary social determinants expressed by the indicators of the Government of Brazil's National Oral Health Policy.
Methods: This ecological study included 5 915 adults aged 35 to 44 years from 27 Brazilian capitals. Indicators of oral health outcomes-tooth loss, restored teeth, and dental care index (DCI)-were extracted from the 2010 National Oral Health Survey. Social indicators (structural social determinants) and indicators of the National Oral Health Policy were obtained from census data and from the Ministry of Health.
Results: A moderate Pearson correlation (r) was observed between SDOH and DCI (r = 0.580), restored teeth (r = 0.545), and tooth loss (r = - 0.490). The social equity component was strongly correlated to DCI (r = 0.856), restored teeth (r = 0.822), and tooth loss (r = - 0.665). These oral health outcomes were not statistically associated with the components related to primary and secondary oral health care. The social equity component explained 44% of the variance in tooth loss, 68% of the variance in the number of restored teeth, and 73% of the variance in DCI.
Conclusions: A significant correlation was observed between SDOH and the social equity component with oral health outcomes in adults in Brazilian capitals. Therefore, equity policies should prioritize actions focused on the SDOH, such as increased sanitation coverage and water fluoridation, and on reducing poverty and regional inequities.