http://www.quackwatch.org/01QuackeryRelatedTopics/mercury.html

thats the one for hal huggins...

In recent years, Hal Huggins has also targeted root canal therapy, claiming that it can make people susceptible to arthritis, multiple sclerosis, amyotrophic lateral sclerosis, and other autoimmune diseases. As with amalgam fillings, there is no objective evidence that teeth treated with root canal therapy have any adverse effect on the immune system or any other system or part of the body. Huggins's dental license was revoked in 1996. During the revocation proceedings, the administrative law judge concluded:

Huggins had diagnosed "mercury toxicity" in all patients who consulted him in his office, even some without mercury fillings.
He had also recommended extraction of all teeth that had had root canal therapy.
Huggins's treatments were "a sham, illusory and without scientific basis." [24]


This is crazy....