CALGARY, CANADA, July 4, 2001
FOR IMMEDIATE RELEASE
The news release by the American
Dental Association (ADA) dated June 13, 2001 contains a
very significant error. The ADA President Dr. Robert M.
Anderton is reported as saying, ``There is no sound
scientific evidence supporting a link between amalgam
fillings and systemic diseases or chronic illness''.
Yet, it is well known in the published, peer-reviewed
dental journals that mercury leaks directly from amalgam
into adjacent oral tissues causing periodontal disease
Critical Fact #1:
In 1957, Zander (JADA, 55:11-15)
reported "materials used in restorative dentistry
may be a contributing factor in gingival disease."
Critical Fact #2:
In 1961, App (J Prosth Dent
11:522-532) suggested that there was greater chronic
inflammation around amalgam sites than non-amalgam
Critical fact #3:
In 1964, Trott and Sherkat (J CDA,
30:766-770) showed that the presence of amalgam
correlates with gingival disease. Such disease was not
present at contralateral amalgam-free sites.
Critical fact #4:
In 1969, Sanches Sotres et al (J.
Periodo. l40: 543-546) confirmed Trott and Sherkat
Critical fact #5:
In 1972, Turgeon et al. (J CDA
37:255-256) reported the presence of very significant
erythema around amalgam restorations that was not
present at control non-amalgam sites.
Critical fact #6:
In 1973, Trivedi and Talim (J.
Prosth. Dentistry, 29:73-81) demonstrated that 62.5% of
amalgam sites have inflammatory periodontal tissue
Thus, as early as 1973, a
case can be made that the presence of dental
mercury-amalgam results in chronic inflammation and
bleeding in the gingival tissue adjacent to it; in other
words, in situ amalgam produced chronic Gingivitis.
Critical fact #7:
In 1974, Freden et al. (Odontol.
Revy, 25: 207-210) showed that gingival biopsy material
from sites not adjacent to amalgam had 1-10 µg
mercury/gram of tissue (mean=3); whereas,
gingival biopsy sites near amalgams contained 19-380 µg
mercury/gram of tissue (mean=147).
Critical fact #8:
In 1976, Goldschmidt et al (J.
Perio. Res., 11:108-115) demonstrated that amalgam
corrosion products were cytotoxic to gingival cells at
concentrations of 10-6; that is,
micrograms/gram of tissue.
Critical fact #9:
In 1984, the year of the NIDR/ADA
Workshop, Fisher et al (J Oral Rehab, 11:399-405)
reported that at amalgam sites alveolar bone loss was
very pronounced and statistically significant as
compared to control non-amalgam sites! In other words,
in situ amalgam produces chronic Periodontitis.
This suggests that placing
mercury fillings leads to a dentist-induced disease,
periodontal disease, which the same dentists then treat.
This is iatrogenesis.
Thus, for the ADA to conclude
``There is no sound scientific evidence supporting a
link between amalgam fillings and systemic diseases or
chronic illness'' is incorrect. Periodontal disease is
one of the most prevalent chronic diseases in Man, and
mercury fillings contribute significantly!
Such statements by ADA
spokespersons suggest that the ADA and its advisors may
be knowingly disinforming the public through the
media or they lack an understanding of the scientific
research about mercury release from amalgam published in
their own journals.
Murray J. Vimy DMD
Clinical Associate Professor
Faculty of Medicine,
University of Calgary.