Dr. Jeffrey Hillman is the creator of BCS3-L1, a genetically altered strain of the Streptococcus bacteria and contender in the dental caries vaccine race.   BCS3-L1 does not produce enamel-eroding lactic acid and upon introduction to the subject's mouth, would replace the native Streptococcus. 

 A four-year longitudinal study of Peruvian children confirms a cause-and-effect relationship between early malnutrition and dental caries.   Over 200 participants, aged 6-11 months, were recruited for the study and classified as:

Group 1:  Normal

Group 2:  Wasted (low weight for height)

Group 3:  Stunted (low height for age)

An interesting little read - Back in 2007, an NYU College of Dentistry research team mapped the migration of early humans by using tooth decay as a biomarker.  The team collected over 600 samples of Streptococcus mutans (on six continents over the course of two decades).

I ran across this blog post from Whole Health Source that highlights a series of studies conducted by Dr.