this is the description on the dentist's site regarding taking out the mercury

"Removing old fillings have been proven to be releasing more mercury than during their many years of service in your mouth. So to remove them and other toxic materials, I use a special isolating dam which seals the entire oral cavity and only leaves the tooth to be treated outside the dam to be worked at. What that means for you is that the mercury will not be swallowed and the assistant will use her two powerful suction tools to suction all saliva and dental materials. Keep in mind that European dental studies have found significant higher amounts of mercury in saliva after you eat and especially after you eat hot meals. Some studies suggest that hot food releases mercury in your mouth. In Germany, amalgam is not allowed on pregnant women and children under 9 years old."

Is it okay to take 7 of them out on the same day?