Research done by a team at the University of Manitoba found that “low levels of vitamin D in pregnancy are associated with the development of cavities in babies.” These findings were based upon a survey of 134 expectant mothers.

The study took blood samples from each expectant mother to measure vitamin D levels. Then they gave each child a dental examination at one year old and found that mothers who were deficient in vitamin D had infants that had deficient or thinning enamel.

These levels suggest that if expectant mothers want their children to have strong teeth, that they should ingest plenty of vitamin D during their pregnancy.

http://well.blogs.nytimes.com/2014/04/21/low-vitamin-d-in-mothers-tied-to-cavities-in-babies/