Impact of Medicaid Policy on the Oral Health of Publicly Insured Children.

Objective Fluoride varnish (FV) applications among non-dentist primary care providers has increased due to state Medicaid policies. In this study we examine the impact of FV policies on the oral health of publicly insured children aged 2-6 years old. Methods Using three waves of the National Survey of Children's Health (2003, 2007, 2011/12), we used a logistic regression model with state and year fixed effects, adjusting for relevant child characteristics, to examine the association between years since a state implemented a FV policy and the odds of a publicly insured child having very good or excellent teeth. We compared children with public insurance in states with FV policies to children with public insurance in states without FV policies, controlling for the same difference among children with private insurance who were unlikely to be affected by Medicaid FV policies. Results Among 68,890 children aged 2-6 years, 38% had public insurance. Compared to privately insured children, publicly insured children had significantly lower odds of having very good or excellent teeth [odds ratio (OR) 0.70, 95% CI 0.62-0.81]. Publicly insured children in states with FV policies implemented for four or more years had significantly greater odds of having very good or excellent teeth (OR 1.28, 95% CI 1.03-1.60) compared to publicly insured children in states without FV policies. Conclusions for Practice State policies supporting non-dental primary care providers application of FV were associated with improvements in oral health for young children with public insurance.

Exploring the genomic basis of early childhood caries: a pilot study.

OBJECTIVE: A genetic component in early childhood caries (ECC) is theorized, but no genome-wide investigations of ECC have been conducted. This pilot study is part of a long-term research program aimed to: (1) determine the proportion of ECC variance attributable to the human genome and (2) identify ECC-associated genetic loci. METHODS: The study's community-based sample comprised 212 children (mean age=39 months; range = 30-52 months; males = 55%; Hispanic/Latino = 35%, African-American = 32%; American Academy of Pediatric Dentistry definition of ECC prevalence = 38%). Approximately 2.4 million single nucleotide polymorphisms (SNPs) were genotyped using DNA purified from saliva. A P < 5 × 10-8 criterion was used for genome-wide significance. SNPs with P < 5 × 10-5 were followed-up in three independent cohorts of 921 preschool-age children with similar ECC prevalence. RESULTS: SNPs with minor allele frequency ≥5% explained 52% (standard error = 54%) of ECC variance (one-sided P = 0.03). Unsurprisingly, given the pilot's small sample size, no genome-wide significant associations were found. An intergenic locus on 4q32 (rs4690994) displayed the strongest association with ECC [P = 2.3 × 10-6 ; odds ratio (OR) = 3.5; 95% confidence interval (CI) = 2.1-5.9]. Thirteen loci with suggestive associations were followed-up - none showed evidence of association in the replication samples. CONCLUSION: This study's findings support a heritable component of ECC and demonstrate the feasibility of conducting genomics studies among preschool-age children.

Effect of early preventive dental visits on subsequent dental treatment and expenditures.

OBJECTIVE: Professional organizations recommend a preventive dental visit by 1 year of age. This study compared dental treatment and expenditures for Medicaid children who have a preventive visit before the age of 18 months with those who have a visit at age 18-42 months. METHODS: This retrospective cohort study used reimbursement claims for 19,888 children enrolled in North Carolina Medicaid (1999-2006). We compared the number of dental treatment procedures at age 43-72 months for children who had a visit by age 18 months with children who had a visit at ages 18-24, 25-30, 31-36, and 37-42 months using a zero-inflated negative binomial model. The likelihood and amount of expenditures at age 43-72 months were compared by group using a logit and ordinary least squares regression. RESULTS: Children who had a primary or secondary preventive visit by age 18 months had no difference in subsequent dental outcomes compared with children in older age categories. Among children with existing disease, those who had a tertiary preventive visit by age 18 months had lower rates of subsequent treatment [18-24 mo incidence density ratio (IDR): 1.19, 95% confidence interval (CI), 1.03-1.38; 25-30 mo IDR: 1.21, 95% CI, 1.06-1.39; 37-42 mo IDR: 1.39, 95% CI, 1.22-1.59] and lower treatment expenditures compared with children in older age categories. CONCLUSIONS: In this sample of preventive dental users in Medicaid, we found that children at highest risk of dental disease benefited from a visit before the age of 18 months, but most children could delay their first visit until the age of 3 years without an effect on subsequent dental outcomes.

Effects of Community Water Fluoridation on Dental Caries Disparities in Adolescents.

Despite improvements in the prevalence of dental caries, disparities are still observed globally and in the U.S. This study examined whether community water fluoridation (CWF) reduced dental caries disparities in permanent teeth of 10- to 19-year-old schoolchildren in North Carolina. We used cross-sectional data representing K-12 schoolchildren in North Carolina (NC) public schools. A poisson regression model was used to determine whether the association between children's parental educational attainment and the prevalence of dental caries of children differed by children's lifetime CWF exposure. We analyzed data on 2075 students. Among the children without any CWF exposure in their life, statistically significant caries disparities by parental educational attainment were observed. Compared to the children of parents with more than high school education, the relative risk for those with a parent with a high school education was 1.16 (95% CI = 1.01, 1.33) and those with less than a high school education was 1.27 (95% CI = 1.02, 1.60). In contrast, these disparities were not observed among children exposed to CWF throughout their lives. Socioeconomic disparities in dental caries were not observed among 10-19-year-old schoolchildren with lifetime CWF exposure. CWF seemed to reduce dental caries disparities.

Development and testing of a patient-centered dental home assessment for low-income families.

OBJECTIVES: The purpose of this study was to develop an instrument in English (ENG) and Spanish (SPA) for use in assessing perceptions of dental home characteristics among low-income adults. METHODS: An expert panel selected 21 items from a pool of 81 items mapped to domains in the American Academy of Pediatrics' medical home. Pilot testing with mothers (n = 795) of children in Early Head Start (EHS) resulted in an expanded 36-item scale, which was field-tested in interviews with ENG- (NENG = 665) and SPA-speakers (NSPA = 116). An exploratory factor analysis of 23 usable items was carried out in an EHS reference group (NENG-EHS = 272). The selected model was evaluated by confirmatory factor analysis (CFA) in two other subgroups (NENG-NonEHS = 393; NSPA = 116). We tested measurement and structural invariances using a multiple-group approach. Known-groups validity was examined by testing factor mean differences between two groups defined by whether or not the mother used a single dental office. RESULTS: A three-factor CFA model with 10 items was retained for its close fit for all three subgroups. Invariance tests found the two ENG subgroups to be homogenous and were combined. Several item and factor parameters in the SPA group differed from the combined ENG group. The proposed dental home measure demonstrated good known-group validity in that people who used the same dental office reported better dental care experiences. CONCLUSIONS: An instrument to measure the dental home concept among low-income adults was developed with three domains (accessible-comprehensive, compassionate, and health literate care) that demonstrated good validity and reliability.