Silver amalgam is very good Long lasting filling material. Brushing never thin down the restoration.so better you can use soft tooth brush.

Hello Silver filling is the most traditional and long lasting filling. It takes almost 24 hours to set completely and attain it's near to maximum strength. Since your filling was done two days back, now there should not be any problem in brushing or using that side to eat food.

We usually recommend not to bite on hard food or drink tea, coffee for first 24hrs of filling as it is gaining strength in this stipulated time period. Consuming such things can act as a barrier in its setting and attaining full strength. Otherwise there is nothing like brushing can remove filling after 2days if  its done properly.

Amalgam or silver filling generally attain full strength after 24 hours. So best to avoid eating anything from that side. No brushing won't effect fillings. But yes, brushing too hard and for longer duration can cause problem to overall health of tooth. So avoid it. Still have queries then please consult with doctor online or offline for better guidance and treatment options.

Silver fillings usually don't come out that easily. It stays for long and doesn't thin on brushing.