Why is there such a stubborn, dogmatic resistance to the
abundance of anecdotal and clinical evidence for the dangers
of amalgams by the dental profession? My dentist of 22+
years explains it like this: the vast majority of dentists
are narrowly trained technicians skilled in evaluating and
performing technical procedures, but not very good at moving
beyond the notions engrained in them by "the system".
Dentists are not known for the ability to question authority
or think critically - it's boot camp for dental
professionals, and their ideas are gospel. No wonder then
that the dental profession reacts so vehemently when their
cherised ideas are questioned.
In addition, the principles (including those regarding
amalgams) taught in dental school are deeply embedded in the
culture of dentistry. Challenging them is akin to
challenging someone's deeply held cultural or religious
beliefs. When institutions have this sort of historical
inertia, change is slow and hard to come by. Egos have a lot
to do with it as well (nobody likes to be wrong, especially
scientists).
He doesn't mean this to be insulting to the dental
profession obviously, and neither do I. It's a wonderful
profession that deserves much respect and appreciation, for
their work is important. And I'm appreciative of the work
dentists do, even though I disagree about the safety of
amalgam. His explanation was meant to clarify why it's so
difficult to convince the dental profession in general what
more and more people are beginning know (many of them the
hard way): that amalgams post a serious health risk to human
beings, and they ought not be used any longer.
It's not just a scientific issue; it's a philosophical,
psychological, and social issue as well, and human health
ought be the top priority here.