eli5 – Why do teeth tingle and ache around metal or scraping noises (I.e a spoon in a bowel)

Question

eli5 – Why do teeth tingle and ache around metal or scraping noises (I.e a spoon in a bowel)

In: 281

Answer 1

Teeth +aluminum = battery…. It’s called a Galvanic shock… When you chomp down on aluminum the electro chemical difference coupled with saliva provides a salty environment. You get a pretty painful shock of voltage.