Hello, my good old amalgam filling just broke off. Having background in toxicology, I am pretty concerned about this situation. Looks like I have swallowed part of it, I rinsed off the rest. There is a residue of amalgam still in my tooth. Removing it can produce further exposure to mercury. Not sure if I am ready to part with my tooth either so my question is, if it makes sense to cover that cavity with composite filling, sealing the remaining amalgam? Can that be done without cleaning/scrubbing old amalgam in the cavity? Thank you.