The evolution of inequalities in the distribution of dentists in Brazil

Abstract

The scope of this article is to analyze the evolution of the distribution of dentists and undergraduate courses in Dentistry in Brazil between 1960 and 2022, based on institutional data and its correlation with economic and demographic data. The proportions between number of dentists and population were calculated for the federative units in different periods, and the Herfindahl-Hirschman Index (HHI) was used. to determine the concentration of dentists, population and undergraduate courses in Dentistry. The Pearson test was used, with a significance level of 95%, to test the correlation between variables. In the period from 1960 to 2022, the ratio of dentists per 10,000 inhabitants increased from 3.3 to 16.9. Moreover in 2022, the federative units with the highest average household income per capita were closely correlated with the highest concentration of dentists (R2= 0.90; p < 0.00). However, from 1975 to 2022, the concentration of dentists measured by the HHI dropped from 45.1 to 33.4. The decrease in the geographic concentration of Dentistry courses was even more pronounced, with the HHI rising from 39.3 in 1991, to 25.6 in 2022.