Disparities in Receipt of Preventive Dental Services in Children From Low-Income Families

Effectiveness of School Fluoride Delivery Programs: A Community Guide Systematic Review

INTRODUCTION

Although preventable, dental caries remains highly prevalent. Many children do not receive preventive dental services routinely in clinical settings. This review examined the effectiveness of school (preschool through high school) fluoride varnish delivery programs (SFVDP) in preventing caries.

METHODS

Community Guide systematic review methods were followed. In 2024, databases were searched for studies published through December 2023 on SFVDP effectiveness in increasing fluoride varnish (FV) receipt and decreasing caries. Included studies had to be written in English, published in peer-reviewed journals, and conducted in upper-middle or high-income countries. Data synthesis conducted in 2024 used median RR and interquartile interval (IQI) to summarize findings across studies.

RESULTS

Of 31 included studies with 60,780 students, 25 were randomized controlled trials-20 with good quality of execution. Most studies were conducted in low socioeconomic status (SES) areas among students at elevated caries risk. SFVDP reduced caries initiation by 32% (IQI: 21%, 37%) in permanent teeth (19 studies, 25,826 students) and by 25% (IQI: 4%, 37%) in primary teeth (12 studies, 4,304 students). Stratified assessments indicated findings were largely applicable to different settings, populations, and intervention characteristics. Two studies found SFVDP significantly increased the number of annual FV applications and two found that SFVDP effectiveness was inversely related to SES.

DISCUSSION

About 30% of states report having no SFVDPs. Possible barriers to implementation include that Medicaid in some states only reimburses dental and medical professionals and does not reimburse non-dental providers for FV delivered to children older than 6 years.

Racial Disparities in Access to Preventive Dental Services in Pediatric Population: A Secondary Data Analysis

BACKGROUND AND OBJECTIVES

Though preventive measures are available to alleviate the burden of dental caries, there remain racial disparities in the utilization of preventative dental care. Our objectives were to determine whether racial disparities persisted in receiving preventive oral procedures between (1) Black children and white children; and (2) Hispanic children and white children.

METHODS

We used pooled Medical Expenditure Panel Survey data in the United States from 2018 to 2021. The key outcome variable involved the use of preventive dental services (ie, examination, x-rays, cleaning, dental sealant fitting, and fluoride treatment), while the main predictor variable involved race (ie, whether they were white, Black, or Hispanic children).

RESULTS

Controlling for covariates, there was no statistical significance in the odds of Hispanic and white children in receiving x-rays, sealants, and fluoride treatment ( P < .001). Black children had significantly lower odds of receiving oral examination, x-rays, and fluoride treatment than their white counterparts ( P < .01).

CONCLUSIONS

This study highlights the massive strides made in the utilization of preventive dental services by Hispanic children in the United States along with the persisting disparities largely present for Black children; however, further studies are needed focusing on structural, sociocultural, and factors contributing to these disparities.

COVID-19 Pandemic Impact on US Childhood Caries and Potential Mitigation

Non-Hispanic Black (NHB) and Hispanic and low-income US children have a higher prevalence of untreated caries than their higher-income and non-Hispanic White (NHW) counterparts. Due to the COVID-19 pandemic, many dental offices and school sealant programs closed beginning March 2020. We examine the effect of reduced access to restorative care and sealants on the oral health of children from low-income households overall and by race/ethnicity and how increased sealant delivery in September 2022 could mitigate these effects. We used Markov chain Monte Carlo simulation to model COVID-19's impact on first permanent molar (1M) caries incidence and loss in quality of life (disability-adjusted life years [DALYs]) due to time lived with 1M untreated caries. Our model followed a cohort of children aged 7 y in March 2020 until February 2024. Model inputs were primarily obtained from published studies and nationally representative data. Excess DALYs per 1,000 children attributable to reduced access to care during the pandemic were 1.48 overall and greater for Hispanic (2.07) and NHB (1.75) children than for NHW children (0.94). Excess incidence of 1M caries over 4 y was 2.28 percentage points overall and greater for Hispanic (2.63) and NHB (2.40) children than for NHW (1.96) children. Delivering sealants to 50% of eligible 1Ms in September 2022 would not completely mitigate COVID-19's health access impact: overall excess DALYs would decrease to 1.05, and absolute disparities in excess DALYs between NHW children and Hispanic and NHB children would remain but decrease by 0.38 and 0.33, respectively. Sealing 40% of eligible 1Ms, however, would bring overall 4-y caries incidence down to pre-COVID-19 levels and eliminate the differential effect of the pandemic on children from minority groups. The pandemic's negative impact on the oral health of children from low-income households and increased disparities could be partially mitigated with increased sealant delivery.

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

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.

Impact of oral health service expansion funding at health centers in the United States

OBJECTIVES

This study aims to assess the impact of Health Resources and Services Administration (HRSA) investment in oral health through the HRSA FY16 Oral Health Service Expansion (OHSE) funding on workforce, access, and quality in health centers (HCs) from 2015 to 2017.

METHODS

Analyses were conducted using data from the Uniform Data System from 2015 and 2017, and the 2015 Area Health Resource File. Change in indicators of oral health workforce, access, and quality of care by the receipt of OHSE funding received by HCs in 2016 were examined. Regression models for 1,345 HCs were developed to conduct a difference-in-difference analyses of the comparative change from 2015 to 2017 in the dependent variables among OHSE and non-OHSE awardees while controlling for confounders.

RESULTS

OHSE awardees showed a significant difference in the oral health workforce with a higher mean number increase by 0.6 full time equivalent (FTE) dentists, 0.4 dental hygienists, 1.1 dental assistants, and 2.3 for other dental staff compared to non-OHSE awardees. Compared to non-OHSE awardees, OHSE awardees showed a mean increase of 712 dental patients served who received 1,402 dental visits, representing a 9-percentage point increase in the percentage of HCs that had an oral health program and a 3-percentage point increase in the ratio of dental patients to total patients.

CONCLUSIONS

Funding dedicated to oral health service expansion in HCs may result in outcomes ranging from increasing workforce to reduction in access and financial barriers. Retrospective analysis demonstrated improved capacity for oral healthcare delivery attributable to HRSA support to HCs.

Preventive oral health care use and oral health status among US children: 2016 National Survey of Children's Health

BACKGROUND

Research has identified significant gaps in preventive oral health care among certain subpopulations of US children. The authors of this study sought to estimate children's preventive oral health care use and oral health and investigate associations with child, family, and health care characteristics.

METHODS

Data for this observational, cross-sectional study came from the 2016 National Survey of Children's Health. Children aged 2 through 17 years were included (n = 46,100). Caregiver-reported measures were preventive dental visits, prophylaxis, toothbrushing or oral health care instructions, fluoride, sealants, fair or poor condition of the teeth, and problems with carious teeth or caries. Univariate, bivariate, and multivariable logistic regression analyses were conducted.

RESULTS

As reported by parents or caregivers, 8 in 10 children had a preventive dental visit in the past year but lower rates of specific services: 75% prophylaxis, 46% fluoride, 44% instructions, and 21% sealants. In addition, 12% had carious teeth or caries and 6% had fair or poor condition of the teeth. In adjusted analyses, young children (aged 2-5 years), children with no health insurance, and those from lower-income and lower-educated households had decreased likelihood of a preventive dental visit as well as specific preventive services. Children with preventive health care visits and a personal physician or nurse had increased likelihood of receiving preventive oral health care.

CONCLUSIONS

Preventive oral health services are lagging among young children and children from lower socioeconomic backgrounds. Further studies are needed to identify interventions that encourage use of specific preventive services.

PRACTICAL IMPLICATIONS

Dentists should work with caregivers and primary care providers to promote preventive oral health care, especially among young children and those from lower socioeconomic backgrounds.

Cost-Savings of Fluoride Varnish Application in Primary Care for Medicaid-Enrolled Children in Virginia

OBJECTIVES

To determine the cost-benefit of fluoride varnish application during pediatric well-visits for the Medicaid/Children's Health Insurance Program population in Virginia (VA) from a Medicaid payer perspective. To provide initial cost estimates from the primary care provider (PCP) perspective.

STUDY DESIGN

A systematic search of recent literature was completed to obtain input data for a Monte Carlo cost-benefit simulation and for the fluoride varnish application time, labor, and materials costs for PCPs. The analysis was conducted from a Medicaid perspective; costs and savings related to fluoride varnish application in primary dentition through 7.5 years were calculated for all Medicaid-eligible children up to 3 years of age in VA. Sensitivity analysis was performed to mitigate the effects of parameter uncertainty.

RESULTS

Delivering fluoride varnish to all children <3 years old in VA who annually receive well-visits through Medicaid but did not receive fluoride varnish at those visits would reduce the percent of 7.5 year olds with decay from 63.2% to 39.8%. Accounting for averted restoration cost, PCP fluoride varnish application would save $75.32 per child, or a total population savings of almost $2 million/year for VA Medicaid. From the PCP perspective, the Medicaid reimbursement rate for fluoride varnish is 3.8-12.0 times the direct fluoride varnish application cost (labor and materials).

CONCLUSIONS

Application of fluoride varnish by a PCP to children under 3 years of age is cost-saving in this study population. Costs to provide fluoride varnish from the PCP perspective are favorable compared with the Medicaid reimbursement, but additional studies on optimizing fluoride varnish application into the well-visit workflow are needed.

The disparity in caries and sealants between migrant and native children in Shanghai: A cross-sectional study

OBJECTIVE

To investigate the disparity in dental caries between native and migrant children in Shanghai, China.

METHODS

Between 2013 and 2015, a random cluster sample of native and migrant children aged 5, 9, 12 and 15 years was collected from each district in Shanghai. Oral examination was performed following the World Health Organization (WHO) method, and findings were reported as decayed-missing-filled teeth of primary dentition (dmft) and permanent dentition (DMFT).

RESULTS

A total of 10 150 children were examined, and 33.6% of them were migrants. Migrant children had a higher prevalence of deciduous caries than native children (the 5-year-old age group, 67.8% vs 63.0%, P = 0.024; the 9-year-old age group, 75.9% vs 66.1%, P < 0.001), and higher dmft values were found in migrant children. But with respect to permanent teeth, no statistical differences were found between the two groups in caries prevalence or DMFT. After controlling for potential confounders by logistic regression, migrant children showed a higher risk of deciduous caries (odds ratio 1.42, 95% confidence interval 1.25-1.61, P < 0.001) but not of permanent caries. Migrant children exhibited relatively lower deciduous Restorative Care Index (RCI). However, 9- and 15-year-old migrant children had a higher permanent RCI than their native counterparts.

CONCLUSIONS

Dental caries prevalence in migrant children was higher in the deciduous teeth but not in the permanent teeth compared to that in their native counterparts. School-based dental public health services may contribute to reducing the disparity in dental health status between migrant and native children.