ESULTS
The study population was comprised of 28% Hispanic, 34% White, 17% Asian, and 25% Black children, and most were born in the USA. Cases were, on average, over a year older than controls, with higher proportions of girls and Hispanic children (Appendix Table 1). Children with WSL had a higher mean gingival index, but did not differ in DMFT or plaque index, compared with children without WSL. Most children reported flossing. There were minimal differences in the diet (Appendix Table 1). Children reported averages of 1.6 mealtime and 1.8 between-meal beverages, and 1.3 nighttime snacks. In comparisons of mealtime with between-meal beverages, frequencies were, respectively, 20% and 7% milk, 30% and 37% juice, and 7% and 12% diet sodas, with no differences in water or sugar-containing sodas.