why does chewing on tinfoil hurt your teeth?
Does it just hurt if you have a cavity or fillings in your teeth?
No - I’ve got neither & when I did it, I wanted to be dead.
It hurts to just read this thread.
I imagine you are getting a galvanic reaction between the metal fillings and the aluminium foil - causing a little current to flow between them stimulating the nerve either directly or indirectly
thanks for the quick replies