Brune D, Hensten‐Pettersen AR, Beltesbrekke H. Exposure to mercury and silver during removal of amalgam restorations. European Journal of Oral Sciences. 1980 Oct 1;88(5):460-3.
When the water spray was not used, the short time threshold limit values for exposure to mercury and silver were exceeded about 10 times. With water spray the mercury content was reduced to a level considerably lower than the threshold limit value, whereas the silver concentration slightly exceeded the corresponding limit.