Toothpaste contains some things that could be toxic, but not in the little amounts that it is in there.
On the topic of rinsing: you shouldn’t do it immediately because even though your tap water may contain fluoride, the tooth paste has a much higher concentration of it and rinsing it, dilutes the effect.
You can rinse after 20 minutes.
I’m guessing anyone who’s told you that was worried about water quality.
In the US our public water is treated with a tiny bit of chlorine (typically but places may be phasing this out) to kill microbes, and fluoride to promote healthy dental hygiene, plus other minerals for taste and fortification.
So you don’t really have an issue in the YS as long as your water has been treated properly. But there are places around the US where water treatment hasn’t always been good/consistent. I’m guessing the issue would be if the water wasn’t treated well against microbes and would normally need to be boiled before using, but then I wouldn’t suggest using it to brush your teeth at all without boiling it first.
Toothpaste contains some things that could be toxic, but not in the little amounts that it is in there.
On the topic of rinsing: you shouldn’t do it immediately because even though your tap water may contain fluoride, the tooth paste has a much higher concentration of it and rinsing it, dilutes the effect.
You can rinse after 20 minutes.
I’m guessing anyone who’s told you that was worried about water quality.
In the US our public water is treated with a tiny bit of chlorine (typically but places may be phasing this out) to kill microbes, and fluoride to promote healthy dental hygiene, plus other minerals for taste and fortification.
So you don’t really have an issue in the YS as long as your water has been treated properly. But there are places around the US where water treatment hasn’t always been good/consistent. I’m guessing the issue would be if the water wasn’t treated well against microbes and would normally need to be boiled before using, but then I wouldn’t suggest using it to brush your teeth at all without boiling it first.
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