Dentist supply and children's oral health in the United States.

Abstract

We evaluated the relationship between dentist supply and children's oral health and explored heterogeneity by children's age and urbanicity. We obtained data from the 2007 National Survey of Children's Health (>27,000 children aged 1-10 years; >23,000 children aged 11-17 years). We estimated the association between state-level dentist supply and multiple measures of children's oral health using regression analysis adjusting for several child, family, and population-level characteristics. Dentist supply was significantly related to better oral health outcomes among children aged 1 to 10 years. The odds of decay and bleeding gums were lower by more than 50% (odds ratio [OR]=0.46; 95% CI=0.23, 0.95) and 80% (OR=0.18; 95% CI=0.05, 0.76), respectively, with an additional dentist per 1000 population. The odds of a worse maternal rating of child's dental health on a 5-category scale from poor to excellent were lower by about 50% in this age group with an additional dentist per 1000 population (OR=0.51; 95% CI=0.29, 0.91). We observed associations only for children in urban settings. Dentist supply is associated with improved oral health for younger children in urban settings.