Deciding whether to remove crown

Hi,
I would like to know if anyone has experience with removal of crowns to ensure that all the mercury Amalgam is out of the mouth. When I was in Mexico, having the mercury fillings removed, I did not remove a bridge, which contains one crown that might have mercury under it. I decided to rely on the opinion of two dentists I saw, who said that it is unusual and not professional to leave a filling in a tooth when placing a crown over the tooth. They said that the dentists will typically put a white paste over the drilled out tooth, and then apply the crown.

Now I wonder if I should have it removed, to be on the safe side. Anyone know anything about this? Any dentists have an opinion? The initial bridge was placed in Germany, about 11 years ago. I haven't been able to reach the dentist, who is likely retired, or deceased. Any input would be appreciated.
Tweet