Amalgam removal with biological dentists is a common practice and is done using the SMART method. This technique involves:
Using an air filtration system including a large vacuum to absorb all the mercury vapors
Rinsing with a chelated agent like Chorella or activated charcoal.
Patient is put under oxygen to prevent inhalation of mercury vapors
Dental dam to isolate the treated tooth
Use of saliva evacuator
Ozone fans in the room to clean the air.
Removing the filling in large chunks
Disposing of amalgam filling material safely