LAUSR

BACKGROUND Preschool-aged children with special health care needs (CSHCN) from low-income households are at increased risk of developing poor oral health. The study goal was to assess preventive dental care use for CSHCN enrolled in Medicaid within Washington state's Access to Baby and Child Dentistry (ABCD) program. METHODS The authors analyzed 2012 Medicaid eligibility and claims files for children younger than 6 years in the ABCD program (N = 206,488). The authors used medical diagnosis and eligibility data to identify each child's special needs status (no or yes). The outcome was preventive dental care use (no or yes). The authors used modified Poisson regression models to estimate crude and covariate-adjusted prevalence rate ratios. RESULTS Of the 206,488 children in the study, 2.1% were CSHCN, and 114,570 used preventive dental care (55.5%). CSHCN used preventive care at rates similar to those of children without special health care needs (SHCN) (54.7% and 55.5%, respectively; P = .32). After adjustment for confounding variables, CSHCN were significantly less likely to use preventive dental care than were children without SHCN (prevalence rate ratio, 0.91; 95% confidence interval, 0.88 to 0.94; P < .001). Older preschool-aged children were significantly more likely to use preventive dental care than were younger preschool-aged children. A significantly higher proportion of preventive medical care users also used preventive dental care. CONCLUSIONS CSHCN who were enrolled in Medicaid in Washington's ABCD program were less likely to use preventive dental care than were children without SHCN who were enrolled in Medicaid. PRACTICAL IMPLICATIONS Future intervention research investigators should evaluate ways to improve access to preventive dental care for CSHCN. Additional strategies may be needed to improve oral health behaviors for preschool-aged CSHCN receiving Medicaid.