Prevention of Developmental Delay and Xylitol (PDDaX) Study

There are no current interventions within this follow-up study. However, the mothers enrolled in the parent PPaX trial received xylitol-containing chewing gum (1 gram per stick of gum and instructed to chew 1-2 sticks of gum twice daily for a total dose of 2-4 grams/day of xylitol throughout pregnancy starting pre-conception or at \<20 weeks gestation).

There are no current interventions within this follow-up study. Children born to mothers who received access to a dentist and prenatal education (oral health, prevention of preterm birth) are in the active comparator group