Hipotetical question…
What kind of diet should I hang on if I want to keep all of my shining 32 teeth perfectly white and useful till I’m 100, but I don’t want to use any of usual or unusual kinds of dental higiene (you know, as floss and brush not yet been invented and toothpicks are the size of medium dildo…)?
Apples I guess. But what else…?
Bonus question.
Any ancient nation famous for having good teeth (as oppose to notoriusly bad toothed ancient Egyptians)?