Mercury Releases From Amalgams


There are numerous science reports demonstrating that mercury amalgam dental fillings leak mercury. Below I have selected a few that clearly demonstrate the fact. There are many, many, many more....

Just know this, the most reliable process for releasing mercury is the same one used to start your car, galvanism. This electro-chemical oxidation process is what releases the batteries energy.

There is no limit on galvanic mercury release from dental amalgam. Oxidation processes will continue until there is no longer any mercury remaining in the amalgam alloy. Amalgams usually fail mechanically due to this process long before all the mercury is released -- that is they fall out or break the tooth first!

"Interactions Between Dental Amalgams and the Oral Environment"; Adv Dent Res 6:100-109, Sept. 1992; M. Marek; School of Materials Engineering; Georgia Institute of Technology; Atlanta, Georgia 30332-0245.

Amalgam Release Pathways
1. Atomic mercury evaporates into oral atmosphere.
2. Dissolution releases metal ions into GI including all amalgam constituents.
3. Amalgam debris and corrosion products travel into the GI.
4. Metal ions move into tooth structure.
5. Metal ions move into pulp and the circulatory system.
6. Amalgam debris moves into the gingiva.

Major Methods of Amalgam Deterioration
1. Galvanic dissolution, oxidation.
2. Abrasion and cyclic loading.
3. Crevice corrosion.

"The Use of Dental Amalgam - An Art or a Science ?"; RV Curtis; D Brown; Dental Update; 1992; July-Aug.

Handling Variables in Amalgam Placement
1. Mercury / Alloy Ratio: "variation of compressive strength".
2. Packing and condensing: "Poor condensation leads to porosity".
3. Burnishing: "bring a mercury-rich, liquid phase up to to the surface".

"Placement and Longevity of Amalgam Restorations"; Acta Odont Scand; 1990; 48:297-303.

Clinical Study
1. 4932 amalgam placements studied for why placed.
2. 39% were for cavity restoration.
3. 61% were replacements for previous amalgam restorations that had mechanically failed.

"Side-Effects: Mercury Contribution to Body Burden From Dental Amalgam"; Adv Dent Res; 6:110-113; Sept. 1992; JW Reinhardt; Department of Operative Dentistry, The University of Iowa College of Dentistry.

Brain Autopsy Studies
1. Sudden Death studies; subject ages 13-59 years; average 28.7 years old.
2. Controls: 0-1 fillings; Intermediates: 1.5-4 fillings; Subjects: 5+ fillings
3. 16 Controls; 16 Intermediates, 51 Subjects
4. Hg in Gray Matter: Controls: 6.7 ng/g; Intermediates: 10.57 ng/g; Subjects: 15.21 ng/g
5. Hg in White Matter: Controls: 3.8 ng/g; Intermediates: 6.58 ng/g; Subjects: 11.22 ng/g

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Copyright ©1996 / 1997 Jeff Clark