Jan,
The news article at the web site:
http://www.abcnews.com/sections/living/teeth1021/index.html
has a paragraph which states:
"An animal study in last month's Journal of the American Dental
Association indicated that 2 percent milk posed the lowest dental
decay risk. Infant formulas were somewhat higher, but still
dramatically lower than any drink containing sucrose. "
Not much info to go on, but it does suggest study (on animals?)
results recently published in September's Journal of the American
Dental Association.
Dena