I wonder if the same can happen from dental implants. While not subject to the same levels of mechanical stress, the mouth can be a very acidic environment which can be corrosive to metals.

In general, mercury amalgam fillings are being phased out, mostly because modern alternatives are superior.

The risk to the individual is actually really low, but cremation and general waste disposal introduces mercury as a pollutant to the environment.

https://www.optimaldentalhealth.co.uk/mercury-fillings-banne...

If you mean the 'screw in jawbone' style implants, those are generally made of titanium.