I heard this on the radio this morning and just googled it.

Would you take a pill to prevent cavities?

I would! I have only ever had a small one that didn't require numbing - I am terrified of getting a cavity!!

http://www.upi.com/Health_News/2016/03/10/Probiotic-pill-to-prevent-cavities-may-be-future-of-dental-care/5491457640581/