2006-06-23 07:34:50 · 8 answers · asked by mg 1 in Health ➔ Dental
i dont know, but i know what you are talking about. it kinda feels like it does when you stick your tounge to a 9volt battery. lol
2006-06-23 07:38:11 · answer #1 · answered by Amber 3 · 0⤊ 0⤋
the foil and the metal in the filling completes a circuit and passes a current. If you want to be really exact just look up the electron potetial of Al and of the amalgam. Than you can see if an electron will pass.
2006-06-23 14:42:36 · answer #2 · answered by don 3 · 0⤊ 0⤋
It is a reaction of the metals. Tonic being a "dental" professional should know this. It does not necessarily mean that you have a cavity. I would suggest that you not chew on foil.
2006-06-23 18:01:39 · answer #3 · answered by perioligament 4 · 0⤊ 0⤋
I think it's because of the contact it makes to a nerve ending in your mouth... Nerves are somewhat "electrically charged".
2006-06-23 14:38:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It's called a galvanic reaction. Very common and doesn't mean there are any problems.
2006-06-23 21:37:33 · answer #5 · answered by blade 2 · 0⤊ 0⤋
Because you're completing a small electrical circuit.
2006-06-23 14:38:10 · answer #6 · answered by gemthewitch 3 · 0⤊ 0⤋
It's basically acting as a battery.
2006-06-23 14:40:34 · answer #7 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋
because you have a cavity..it has nothing to do w/ the amalgams
2006-06-23 14:37:46 · answer #8 · answered by tonic072780 2 · 0⤊ 1⤋