"dentists protocol around amalgam fillings"

my dentist said he did not have the protective equipment to safely remove the mercury silver amalgam filings that I believe were leaking into me for thirty years slowly poisoning me. No dentist had ever told me before that I had mercury filings in my mouth I am shocked and appalled that some one out there thinks that one of the most toxic chemicals known to science is harmless. Maybe they are not human but I am and I know no amount of man made inorganic mercury is safe for the human body neither toxic fluoride in all its forms, so why am I at risk of poisoning and death when so many public health authorities are supposed to be there to protect the public from this attack of poisons on the British public.