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].
- Here, does exist a dangerous assumption/ingestion amount of fluoride (via toothpaste)?
Mymy assumption: I think yes, becauseis sustained by the fact that most commercial toothpastes[a][b][b][c][d] have exactly 1450ppmless than 1500 ppm of F− in them...
- So, what does the maximum dose (or the 1450ppm) depend on?
- Why could it be dangerous? e.g. will it lead to problems? will it lead to the same problems as ingestion of fluoride?
Ultimately, does exist a daily upper safety level for fluorine absorbed from the toothpaste?
