There is what is described as plaque, on teeth, in coronary arteries, and is associated with alzheimers disease, in the way it's accumulation, interferes with the normal thinking process, particularly in the places that are responsible for short term memory. All examples seem to have the same substance the origin of which, is explained in a different way in each case. Perhaps it is a bacteria, that turns a normally useful fat into plaque. A bacteria that if eliminated could show our dietary patterns in a new light. The cholesterol that we eat may not be near as dangerous as what the bacteria turns it into. I know it is speculation, but I keep thinking of the virus that caused ulcers, was not...

There is what is described as plaque, on teeth, in coronary arteries, and is associated with alzheimers disease, in the way it's accumulation, interferes with the normal thinking process, particularly in the places that are responsible for short term memory. All examples seem to have the same substance the origin of which, is explained in a different way in each case. Perhaps it is a bacteria, that turns a normally useful fat into plaque. A bacteria that if eliminated could show our dietary patterns in a new light. The cholesterol that we eat may not be near as dangerous as what the bacteria turns it into. I know it is speculation, but I keep thinking of the virus that caused ulcers, was not discovered until recently, because no-one looked. Ulcers were blamed on other things. I wondered why the plaque was in those places. The teeth for the food, the coronary arteries for the oxygen, and the brain, because once you get in the immune system is kept outside. I can't help but speculate. There seems so much more to plaque than cholesterol. If you told someone thirty years ago that they could be cured of an Peptic ulcer with antibiotics they would have had trouble believing you.

There is accumulation of heavy metals such as lead Mercury, and cadmium, amongst others, which the body has trouble eliminating. Each heavy metal has different symptoms according to levels, duration, age of ingestion, and complications relating to other conditions.
Amalgam while known as silver amalgam has a mercury content which must have been designed to be fixed in a stable form but has been known to leech from the filling. I don't think the metal Silver is as much of a problem, but they are still doing research. It may be possible to see if this leeching has occurred, with a blood test for mercury, but I'm sure that there are many places that can do this. Even with the fillings removed ...

There is accumulation of heavy metals such as lead Mercury, and cadmium, amongst others, which the body has trouble eliminating. Each heavy metal has different symptoms according to levels, duration, age of ingestion, and complications relating to other conditions.
Amalgam while known as silver amalgam has a mercury content which must have been designed to be fixed in a stable form but has been known to leech from the filling. I don't think the metal Silver is as much of a problem, but they are still doing research. It may be possible to see if this leeching has occurred, with a blood test for mercury, but I'm sure that there are many places that can do this. Even with the fillings removed it would be harder to get peace of mind not knowing something like that. It could even help provide information to help with the research.
I looked around wikki. and found-
"Dental restorative materials:"
There is an earlier , similar amalgam no difference has yet been found in their toxicology
Around 1970, the ingredients changed to the new non-gamma-2 form, with lower manufacturing cost, greater mechanical strength, and better corrosion resistance. The reduced-gamma-2 amalgams (sometimes referred to as "high-copper" amalgams) contain approximately equal parts 50% of liquid mercury and 50% of an alloy powder containing:

* > 40% silver (Ag)
* < 32% tin (Sn)
* < 30% copper (Cu)
* < 2% zinc (Zn)
* < 3% mercury (Hg)

The amalgam alloy is strengthened by presence of Ag-Cu particles. The gamma-2 phase reacts with the Ag-Cu particles to form eta phase Cu6Sn5 and gamma-1 phase.

The possible difference in toxicology between the two has not been studied conclusively. Amalgams continue to be used today because they are hard, durable and inexpensive.
Hope it helps