BAD TEETH WARNING: Having 'more than 8 fillings could raise blood mercury levels'
They are made of a mixture of metals which also include silver and tin.
Now for the first time scientists have found a link between tooth fillings and mercury exposure - which can lead to severe illnesses.
In Britain more than one million children under the age of five already has at least two fillings.
Brits have a reputation for bad teeth with the average adult having seven fillings - compared to three in the US.
Researcher Dr Lei Yin, of Georgia University, said: "Tooth decay is one of the most prevalent chronic diseases.
"I think a majority of people have experienced dental... read more
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