Synthesizing 30-years of adult medicaid dental policy research: A scoping review to identify gaps and opportunities

Objective

Despite the importance of Medicaid for the oral health of low-income adults, the extent to which Medicaid dental policy variation influences outcomes is unknown. This study aims to review the evidence evaluating adult Medicaid dental policies to synthesize conclusions and motivate future research.

Data sources

A comprehensive search of academic literature published in English between 1991 and 2020 was conducted to identify studies which evaluated an adult Medicaid dental policy for its effect on outcomes. Studies strictly involving children, policies not related to adult Medicaid dental coverage, and non-evaluation studies were excluded. The data analysis identified the policies, outcomes, methods, populations, and conclusions of the included studies.

Results

Among the 2731 unique articles extracted, 53 met the inclusion criteria. 36 studies evaluated the effect of expanding Medicaid dental coverage, which was found to consistently increase dental service visits (21 studies) and reduce unmet dental needs (4 studies). Provider density, reimbursement rates, and level of benefits appear to influence the effect of expanding Medicaid dental coverage. The evidence for changing Medicaid benefits and reimbursement rates were mixed for its impact on provider participation and emergency dental services. Few studies examined how adult Medicaid dental policies impact health outcomes.

Conclusions

Most of the recent research has focused on evaluating the effect of expanding or reducing Medicaid dental coverage on dental service utilization. Future research investigating the impact of adult Medicaid dental policies on clinical, health, and wellness outcomes remains warranted.

Clinical significance

Low-income adults are responsive to Medicaid dental policy changes and utilize more care with more generous coverage. Less is known about how these policies influence health.

A systematic review of dental-related emergency department among Medicaid beneficiaries

OBJECTIVES

Dental-related emergency department (ED) visits are a growing public health concern. Dental insurance coverage is a strong predictor of dental service access. The objective of this study was to conduct a systematic review to assess the incidence of dental-related ED visits for Medicaid dental enrollees compared to those with other insurances.

METHODS

PubMed, EMBASE, and Google Scholar were searched for surveillance and observational data published in English from January 1999 to April 2020 to address the following PECOT question: Do patients with nontraumatic dental conditions (NTDC) (P1), or patients with any dental condition (P2) who have Medicaid (E) compared to other insurance status (private insurance, Medicare, no insurance) (C) have a differential incidence of single dental-related ED visits (O) in the literature search results from 1999 to April 2020 (T)? A critical appraisal was performed using a combination of the AXIS tool (for cross-sectional studies with observational data and MetaQAT (for public health evidence).

RESULTS

This systematic review included 32 studies. Overall, risk of bias was low. Due to significant statistical heterogeneity, a synthesis without meta-analysis was conducted. NTDC ED visits ranged from 16.0 percent to 79.8 percent for Medicaid patients and 0.9 percent to 57.2 percent for uninsured patients. The range for any dental visit to the ED was 2.2-63.8 percent for Medicaid patients and 2.9-40.8 percent for uninsured patients.

CONCLUSIONS

The results of this study support expanding insurance coverage in Medicaid programs to reduce ED use for NTDC visits in the United States.