The National Dairy Council wrote in its article "A Protective Effect of Dairy Foods in Oral Health," published on its website (accessed Jan. 17, 2008):

“Milk’s nutrients such as calcium, phosphorus, magnesium, vitamin D, and others support the development of teeth and oral tissues in young children which may help to protect against dental caries. Although evidence is limited, milk’s nutrients such as calcium may have a role in protecting against periodontal disease in adults…

Several different types of studies indicate that milk is noncariogenic and does not promote dental caries.”

Jan. 17, 2008