>>45680
I noted it here:
>2. it crystallizes on the teeth creating a resistant coating
About this:
>which is why dentists want you to fluoridise your teeth.
I had 4 dentists (one of whom I met only once, not sure if counts), none wanted me to use teepaste with fluoride, or treat my teeth in any other ways. They talked about how to wash teeth well, what toothbrush to pick, and flossing.
Beside your claim I only heard similar in advertisements. This make me doubt dentists actually do that.

Problem is dentists don't talk much about dental hygiene in the first place. They don't talk about neutralizing acids (the role of water, or basic ph), or the digestive work of bacteria. What kids get fed with - not by dentists! - is bacteria literally drilling holes in the teeth, or with other mechanical ways.
Parents also don't talk about this with their kids. Especially since most adults have only the same vague ideas about tooth decay.
Maybe in school, during biology lesson, the teacher talks about it, or in chemistry when learning about elements and they mention calcium and limestone, and do vinegar experiment on some. But who listens to teachers - besides the couple brown-noser in the first row?