https://image.slidesharecdn.com/stfactsheetcombined10-23-02-...
I assume she had a combination of good genes, frequent teeth cleaning right after meals, low sugar intake, and no soda/alcohol.
I have never had a cavity as of mid 30s, and I only started going to dentist at 23 or so. I don’t eat much, if any, sweets/junk food/soda.
I'm imagining some sort of encyclopedia of tobacco toothpastes