2006-08-14 08:58:39 · 4 answers · asked by Anonymous in Health ➔ Dental
The reason the tin foil feels weird is a phenomenon called galvinism.
When two different types of metal touch, electrons pass from one metal to the other. Your saliva acts as a conductor between the tin foil and your metal fillings. What you've created is essentially a weak battery. The weird feeling is the electric current traveling from one metal to the other.
The same thing hapens sometimes when you get a new filling and it's biting against an old one or a gold crown. It goes away after the fillings have been in there for a few hours after the "battery" goes dead.
This has been your science lesson for today. This material will be on the final.
2006-08-14 09:23:55 · answer #1 · answered by cjmacri 3 · 0⤊ 0⤋
i dont know, but just reading this question brought the pain back again. that really is the strangest fel=eling you get , like your body is just gonna cringe into a puddle of splat.
2006-08-14 16:05:36 · answer #2 · answered by Pussycat 4 · 0⤊ 0⤋
Because you are biting something hard enough for your tooth's nerve to feel it.
2006-08-14 16:03:36 · answer #3 · answered by wildbill05733 6 · 0⤊ 0⤋
Candy makes my teeth feel that way.
2006-08-14 16:04:14 · answer #4 · answered by Slick1 3 · 0⤊ 0⤋