A frequent question I encounter is whether dental amalgam (grey fillings) are safe? Current scientific research has concluded there is no medical reason to remove existing functional amalgam fillings as there is no proven link to any medical issues. However if you search the web, there is a plethora of anaectodal evidence that says otherwise. Invented in the 1830’s, amalgam is still used today but diminishing in popularity due to the controversy about toxicity of its 50% mercury component.
My personal viewpoint is there are many other materials available in modern dentistry that are superior to amalgam. It has been more than a decade since I used amalgam in my Practice.