Cool. I'm in no place to disagree. But can you point to a study that confirms this?

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That hydroxyapatite is equally effective or that topical fluoride reduces decay?

I even used a topical silver fluoride in our practice and that reversed decay on contact. Usually took two applications.

My family has never used fluoride or the other additive you mentioned. Our water source doesn't have it (luckily) and we avoid it in our toothpastes.

We are a fairly typical American family otherwise, so we don't have the best diet, though we do avoid some of the more egregious sugar-based items like sodas, etc. We certainly eat too many carbs.

Anyway, we don't have tooth problems. This is purely anecdotal of course.

On a side note, many of my sons friends do have tooth decay issues despite using fluoride toothpastes. The dentists in my area even recommend fluoride pills for those of us within the fluoride free water district. We don't take it, but many do.

I'm not saying that fluoride doesn't work. But I am pretty skeptical based on my experience.

Genetics do impact decay. Some ethnicities have higher rates of decay and gum disease due to their common oral bacterial composition.

You are simply lucky. Studies and history are clear that fluoride reduces the rate of caries. Fluoridated water programs worked at reducing decay because they began before fluoride toothpaste were widely used. That being said, I do not believe it should be ingested. It even says so on your toothpaste.