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metal fillings and aluminum foil

Biting on aluminum foil can be painful. Why? HowStuffWorks

Basically, when you bite on foil, you set up a battery in your mouth and the electrical current stimulates nerve endings in your tooth. Here is what happens: pressure from biting brings two dissimilar metals (aluminum foil, mercury in fillings or gold in crowns) in contact in a moist, salty environment (saliva) the two metals have an electrochemical potential difference or voltage Estimated Reading Time: 1 minWhy Biting Aluminum Foil Hurts Andrew Skorobatckyj, Oct 25, 2017 Accidentally biting aluminum foil is one of the most common ways people experience galvanic shock. But its not the only way to cause it. If you have fillings or metal crowns that are made of different metals, simply biting your teeth together can cause a shock too! And if youre a teeth grinder, youll notice right away when it happens! Modern dental amalgam Why does aluminum foil "electrocute" dental fillings? Apr 04, 2017 Between the foil of aluminum/Al, and the metal filling of amalgam in your tooth, you created a little electrochemical cell. Your saliva served as an electrolyte and your nerves around sensibly detected the current.Reviews: 2

fillings: Aluminum foil and fillings?

May 21, 2010 When you have amalgam (metal) fillings , and you bite on aluminum foil, it creates direct-current electricity called "galvanism". Galvanism in this case is cause by two dislike metals coming into direct contact with one another. The metal itself is an excellent conductor of electricity, sending the electrical shock to the nerve of the tooth (teeth).Estimated Reading Time: 2 mins