No, they are not safe because elemental mercury accounts for 50% of the amalgam filling, and when it is stimulated by many common behaviors (such as brushing teeth, grinding teeth and eating), it releases mercury vapor continuously - more (as you can see ). Eighty percent of the mercury is released into the body and every mercury atom that enters it is harmful.
Mercury is the most toxic and naturally occurring non-radioactive material on our planet. The World Health Organization, WHO said that there is no safe level of mercury, and pointed out that amalgam fillings are the largest single source of mercury, over fish and other sources of mercury. It is worth noting that three European countries Norway, Denmark and Sweden have permanently banned amalgam fillings and can no longer be used as filling materials.
Although more than 50% of ordinary dentists no longer use amalgam fillers, there is still controversy surrounding them. However, no studies have shown that amalgam fillings are safe, but thousands of studies that demonstrate mercury are toxic and more effective than arsenic, lead or cadmium. Although more and more evidence shows that amalgam fillings can release unsafe mercury levels, there are still dentists who insist that they are safe and harmless.
