eli5: Why does tinfoil affect teeth nerves so much?
In: Biology
Wait what.. tinfoil doesn’t feel good on the teeth ?
I’ve never known that ’cause.. who has tinfoil in their mouth for any reason ?
Who has tinfoil? Where do you get it? I never seen tinfoil in any home or store.
Galvanic reaction.
Two different metals combined with an elecrolyte solution create an electrical current. So aluminum + metal fillings + saliva = current.
Omg just reading it is making me shake.
Remember the juicy fruit foil? Try grinding that between your teeth? Ooooh I can feel it.
And cotton, I can’t touch cotton balls for the life of me. I’d rather hear the knife screech across the plate or nails down a chalkboard.
What did I just do?….
dental hygienist here- it’s actually got it’s own term-galvanism. And like others have said, is a reaction between the two metals, likely from amalgam (silver) fillings creating a small electric current. This (although rare) can sometimes create a serious reaction and cause damage, so I would recommend avoiding chewing foil if possible.
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Tinfoil + dental fillings = weak battery.
Stick a 9V battery on your tongue, exact same thing (but a much stronger shock).
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