Amalgam Fillings, are they safe?

[Iverson dental labs]

As a dentist, what is your professional opinion on the use of amalgam fillings, do you feel that the constant release of mercury, though trace amounts, throughout the patients life could have no detrimental effects. Although it hasn't been proven that these fillings create health problems, its a well known fact that mercury is a poisonous element and knowing that your filling is essentially leaking trace amounts of it, do you feel that it is 100% safe?