: Fluoride poisoning by toothpaste Long story short: Is there a maximum number of teeth brushing per day without having fluoride poisoning? Full story: It is certain that a high fluoride intake leads to health problems.

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Fluoride poisoning by toothpaste
Long story short:
Is there a maximum number of teeth brushing per day without having fluoride poisoning?

Full story:
It is certain that a high fluoride intake leads to health problems. This is related to ingestion only (that is swallowing toothpaste, drinking high-fluoride water, eating rich-fluoride food) of this element.

While, when we talk about fluoride in toothpastes, we have a completely different assumption and absorption mechanism.
Thus, I assume, there will be different AI (adequate intake) and UL (upper intake level) than for fluoride food assumption[a].

my assumption is sustained by the fact that most commercial toothpastes[b][c][d] have less than 1500 ppm of F? in them

Ultimately, does exist a daily upper safety level for fluorine absorbed from the toothpaste?

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