I would never ever get an amalgum/silver filling in my child's mouth. Before you do, you should watch 'The Beautiful Truth'. It's a documentary available on Netflix for sure, maybe other places too.
Amalgum fillings contain Mercury, the same way vaccines used to. It was removed from vaccines, but not amalgum fillings. Mercury vapor is continuously released from amalgum fillings and mercury exposure has been linked to autims, dementia, add, heart disease, cancer...etc.
You would never let your child handle mercury, but you would put it in their mouths? I feel awful about my daughter's first cavity that was filled with an amalgum filling, and am thankful that it will be falling out soon.
I'm not trying to be preachy or talk about a conspiracy theory. I'm just traying to make you aware, if you weren't already. I had NO CLUE about any of this until after I did some research...