Association between Medicaid expansion, dental coverage policies for adults, and children's receipt of preventive dental services.

Khouja T, Burgette JM, Donohue JM, Roberts ET. Association between Medicaid expansion, dental coverage policies for adults, and children's receipt of preventive dental services. Health services research. 2020 Oct 1; 55(5):642-650.

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Abstract:

OBJECTIVE: To examine whether low-income children''s use of preventive dental services is linked to variation in state Medicaid policies that affect parents'' access to dental care in Medicaid. DATA SOURCES: Medical Expenditure Panel Survey (2011-2016), Area Health Resources File, and Medicaid adult dental coverage policies. STUDY DESIGN: We conducted a quasi-experimental analysis using linked parent-child dyads in low-income families ( = 125 percent of the Federal Poverty Level). We assessed whether expansions of Medicaid to low-income adults under the Affordable Care Act were associated with increases in the use of preventive dental services among low-income children when state Medicaid programs did vs did not cover these services for adults. PRINCIPAL FINDINGS: Over the study period, 37.8 percent of low-income children received at least one annual preventive dental visit. We found no change in children''s receipt of preventive dental care associated with Medicaid expansions in states that covered (1.26 percentage points; 95% CI: -3.74 to 6.27) vs did not cover preventive dental services for adults (3.03 percentage points; 95% CI: -2.76 to 8.81). (differential change: -1.76 percentage points; 95% CI: -8.09, 4.56). However, our estimates are imprecise, with wide confidential intervals that are unable to rule out sizable effects in either direction. CONCLUSION: We did not find an association between Medicaid expansions with concurrent coverage of preventive dental services for adults and children''s use of these services. Factors other than parental access to dental benefits through Medicaid may be more salient determinants of preventive dental care use among low-income children.