Recreate the cavity-preventing GMO bacteria BCS3-L1 from precursor
it's shocking that it hasn't been mentioned (ok, except by me in another comment) but flouridating municipal water systems through/after the 1960's at least in the US had a huge impact on the number of cavities/caries among children. Yuge. There are suspicions that fouride isn't good for us, and I mean beyond our precious bodily essences too, but in terms of teeth, it's been miraculous.<p>I'm just mentioning it because people are talking about bacteria being "the deciding factor" to account for differences in outcomes, and there's a flouride elephant in that room.