alt Hacker Newsi find the inconsistent advice from "Dentists" very discouraging.
just like midwives they all seem to have their own opinions that dont equate to scientifically researched advice, yet are presented in a way that if you;re not paying attention will be taken as such.
It's also the case that different people have different mouths and habits and there is no one-size-fits-all solution, and the best option might be to try a variety of options and see what sticks for you.