Is AMALGAM Safe?
Dec. 1993 The State of California passes new legislation. All Californian dentists who use Dental Amalgam must post the following warning clearly in their dental surgeries. All Amalgam manufacturers must display this warning on all amalgam sold in California:
This Office uses amalgam filling materials which contain and expose you to Mercury, a chemical known to the state of California to cause birth defects and other reproductive harm. Please consult your dentist for more information.
FACT: There is not one research article which demonstrates the safety of Dental Amalgam as a Non-Toxic substance!
The First Deception
The metallic silvery black fillings in your mouth are often called Silver Amalgam fillings! They are in fact Mercury Amalgams Fillings.
It is estimated that the average Amalgam Filling will release up to half of its Mercury content over a ten year period ( 50% Corrosion Rate). It will therefore release between 68 and 130 Micrograms per Day per Filling. Ð The Australian Dental Association on 6/8/93 claimed that Mercury comes out of the fillings in Nanogram quantities – this is in the order of thousands less than what is actually released
Once Mercury Gets Into Your Body
Retention of mercury in the body is at least 1 mcg /filling /day. [19, 20]
The World Health Organisation Speaks Out
Environmental Health Criteria 118 1991: In 1991 the World Health Organisation published its findings on environmental exposure to Mercury. This is the first time Dental Amalgam Fillings were included as a dietary source of Mercury. Their findings were that the main source of Mercury exposure and absorption is from dental Amalgam Fillings – up to ten times the amount you will get from fish and sea food. They also concluded that there is NO safe level of Mercury vapour. The Mercury found in fish is Methyl Mercury & is often detoxified by the presence of Selenium.
How Does Mercury Enter Your Body?
Release & Transport
Mercury escapes from Amalgam Filling as; Mercury Vapour, Elemental Mercury & Mercury Ions. Mercury release is increased with increase in; Temperature, Grinding, Tooth Brushing & Electrical current It is transported around the body by Arterial & Venous Blood , Lymphatic System, Nerve Fibres [35,34, 26] 80% of Mercury vapour is absorbed through the lungs. [ 41,32]
Oral Mercury Vapour
Amalgam Fillings in the mouth will produce Mercury vapour levels from 6 to 150 micrograms per cubic meter. [1,15, 16,17,19,20,32,37]
Where Does the Mercury Go ?
The Mercury levels in the brain have been shown to be in a direct proportion to the number of Tooth Surfaces covered by Amalgam Fillings in the mouth. [ 15,17,20]
‘The Brain is the CRITICAL target organ for Mercury Vapour & Methyl-Mercury and is most significant in cases of Chronic, Low- Level Exposure to Mercury Vapour’ 
This is the basis of what is called “Micro-Mercurialism “
Mercury crosses, the Blood-Brain Barrier. This is the system which maintains the central nervous system free of organisms and toxins. These levels will severely disturb cellular function and reduce the growth of nerve fibres at much lower levels 
Dentists regularly implant Mercury Amalgam Fillings directly into bone, in the form of Retrograde Amalgam fillings (which are a filling placed at the end of the root). There is an item number for this procedure, it is condoned by the Australian Dental Association & it is considered the treatment of choice by many dentists.
Mercury has been shown to cause a 50% reduction in kidney filtration function after just two months in the mouth. (Animal studies) 
Weakened Immune System
Mercury will rapidly and always effect the Immune System. This creates an environment in the body for the growth of organisms and the production of further disease.
Mercury binds to Haemoglobin in the red blood cell and will reduce the amount of oxygen which can be carried in the blood – a major cause of Fatigue. Mercury at a level of 1 part per ten million will actively destroy the membrane of red blood cells. [36, 49, 23, 18]
Heart function will be effected by both the electrical currents and the Mercury. eg; tachycardia, increased blood pressure, arrhythmia’s.
Latest research links Mercury levels in the brain with Alzheimer’s Disease. Mercury is the metal found in greatest concentrations, in the brain of Alzheimer’s patients.
Mercury & Your Baby
Mercury, from Amalgam Fillings will cross the placenta and the breast milk.
If you are pregnant, Do Not have Amalgam Fillings inserted or removed if possible. Ideally do not go into a surgery where Amalgam Fillings are used, as the Mercury vapour levels may be high enough to effect the health of the foetus.
A 1993 research project has demonstrated that Mercury from Amalgam fillings will cause an increase in Antibiotic Resistance in the Bacteria of the gut and the mouth of primates. This could make relatively simple infections difficult to treat. 
The Battery Effect
Amalgam Fillings in the mouth will react with each other and with different metals, to form a battery. The electric currents, thus generated are in the micro amp range. This is in the same order of magnitude as that induced in a person standing under high tension power line. Our brains operate at a level of Nano amps which is 1000 times less than a micro amp. The higher the current the more Mercury will be released from the Amalgam Fillings. [20, 28, 29, 30, 35, 49, 60
Amalgam & Gold Can Really Cost You
The combination of Amalgam fillings, in the mouth , with other metals (eg. gold and stainless steel), will increase the electric currents in all the fillings. This will cause an increased release of Mercury from all fillings ( by up to 4 to 10 times ). Mercury will migrate through the tooth to the surrounding tissues. Root biopsy of a tooth with an Amalgam Filling will show Mercury up to 200 - 300 mcg per gram tissue. In a tooth with an Amalgam Filling covered by a gold crown you can find up to 1200 mcg per gram tissue. [31, 26] The Mercury is electrically pumped out of the Amalgam Filling. Therefore, any amalgam under crowns is not sealed off – it is still toxic. Most crowns are placed over existing amalgam fillings to reinforce them. It is not uncommon to find up to 15 different metals in the one tooth.
Effects on Dentists
Many scientific studies have demonstrated that dentists and staff are heavily poisoned and effected by Mercury; [1, 7, 8, 9, 10, 11, 12, 13, 32, 35, 37,] -Infertility, spontaneous abortion and birthing problems up to twice the rest of the population [4, 5, 20, 52] -I. Q. levels reduced to one standard deviation below the rest of the population.  -The rate of glioblastomas (a form of brain cancer) is twice as high in dental personnel as the rest of the population.[ 15, 35] -Biopsies of dentists brains have shown up to 80 times the
Why Does Australia Lag Behind Other Countries?
The Australasian Society of Oral Medicine and Toxicology was formed by a group of dedicated dentists and doctors with the aim of educating the public and the professions about the concepts of Bio-Compatible Dentistry. It is a non profit organisation.
This document is authorised by the Australasian Society of Oral Medicine and Toxicology. Phone +64 2 867-1111
1Sandra Denton MD : Proceedings of the First International Conference on Biocompatibility 1988
This site is maintained and copyrighted 1994-1997 by Leif Hedegard. However, the article above is written and copyrighted by Dr Robert Gammal 1995, forwarded here after permission. Updated 16 November 1996. The www-address of this page is: