The Nazis
The website of Rochdale dentist John Roberts includes the following article:
Other information and possible insights into the Nazi's policies on dental materials may be found at:
Holocaust Dental Gold Underestimated?
and:
The "Auschwitz Gold" letter suggests that the Nazi hierarchy intended to use the dental gold stolen from concentration camp victims for their own dentistry, and that an amount sufficient to meet their needs for the foreseeable future may have been amassed unexpectedly quickly.
Did these people have something against mercury amalgams?