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Comment by zouhair

20 days ago

25% of the world population do not have access to drinkable water[0], brushing their teeth is a luxury for them.

[0]: https://toronto.citynews.ca/2023/03/22/un-26-of-world-lacks-...

You see there's a difference between world and Utah/USA. In Utah nearly 100% of the population has access to drinking water.

You need zero water to brush your teeth with toothpaste. Many dentists even say it’s preferable to not rinse your brush before and not rinse your mouth after.

  • So when you go to brush your teeth you don't wet the toothpaste and toothbrush from the tap? Is it the fear of tap water that centers around this? I am curious about this as it seems the answers carry some cultural significance.

    • No - toothpaste is in part an abrasive. If it's wetter, the abrasive is less effective at removing biofilm/plaque, and the chemical components are diluted in situ. Your mouth is plenty wet enough as-is.

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  • When you do so, which I do too, is the amount of fluoride you potentially swallow more than that in fluoridated water?