Electromagnetic Energy in Dental Amalgams

The website of electronic equipment manufacturer Gore Electronics makes the following assertion regarding the electromagnetic properties of materials:
"If you can describe the permittivity, permeability and conductivity of a material, you can describe completely how electromagnetic energy behaves within that material."
See:
http://www.goreelectronics.com/products/emi/Electromagnetic_Material_Character.html
In view of the fact that metal amalgam dental fillings are placed in children's teeth, and in view of the fact that individuals are subjected to different types of electromagnetic energy every day, you would have thought that at sometime someone somewhere should have carried out experimental investigations to determine the permittivity, permeability and conductivity of dental amalgam in order to "describe completely how electromagnetic energy behaves within that material."
(Well I would at least.)
Does anyone know of any reason why it should not be possible to describe completely how electromagnetic energy behaves within metal amalgam dental fillings?
Keith P Walsh
PS, some enquiries concerning the electrical properties of dental amalgams can be found at:
http://book.boot.users.btopenworld.com/intro.htm

I went through college doing Electronics. We used to do simple experiments to determine these properties as part of our course. Its not rocket science and takes less than an afternoon with simple equipment..
However - the properties for copper are well known and documented. Holding to your head - or a copper coin or a copper antenna emmissing megawatts of microwave energy may have very different effects. These properties are trivial compared with the geometry and topography of the material. EG you can make a copper lightning rod or a high voltage transformer from the same copper chunk. One could make 35,000 volts and the other save your life by being a lightning conductor.
I think its a bit like describing the properties of fibreglass. Its dangerousness might depend on wether its in a missile nose cone or in a fishing rod. Not that its fibreglass.
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http://www.goreelectronics.com/products/emi/Electromagnetic_Material_Character.html

Thank you for your "reply".
Do you know of any reason why it should not be possible to describe completely how electromagnetic energy behaves within metal amalgam dental fillings?
Keith P Walsh
On Sun, 29 Feb 2004 13:24:07 +0000 (UTC), "John Chewter"
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349 to 350 millivolts ... what more can be said?
JOEL
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Completely? What does completely mean in this context? It would depend up the exact recipe for that particulat lump of it, its shape, size, which direction the guy way facing, proximity to other filling, braces, sunglasses, the guys, the individual body makeup, how much is he salivating, position on the globe, what he last ate.........
I guess you could completely descripe an individual filling in an individual context.
What is the point here? Life is too short for this.
Pauses while Jan Drew sharpens her pencil...........
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John Chewter wrote:
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    I take it to mean an explanation that will get Mr. Walsh off this newsgroup. Are you man enough?
Steve

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he won't go away until he realizes that his repeated postings on here will never make any progress in the state of dentistry in the real world. he can ask his questions as many times as he wants, but there is no one on here who can make a difference. these groups are populated by argumentative scientist wannabes picking nits over nothing, clueless high school dropouts with dreams of becoming the next Einstein pushing their latest crackpot theory that was debunked 50 years ago, doom and destruction mongers like Walsh who are trying to drag the rest of the world down to their dungeon with groundless claims and arguments, and trolls just hoping to drag anyone into another endless discussion about nothing(Walsh will move to this group shortly if he isn't here already).

But how will we keep up with what is the latest readings of millivolts per amalgam? Right now, its 350.
JOEL
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You wrote,
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REPLY
Thank goodness for that. It has oft been said that Jan is not the sharpest pencil in the box!
JOEL
On Sun, 29 Feb 2004 16:37:44 +0000 (UTC), "John Chewter"
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On Sun, 29 Feb 2004 16:37:44 +0000 (UTC), "John Chewter"
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I can offer an example of one context in which our knowledge of the electromagnetic properties of dental amalgams might be considered incomplete.
The website of UK company Microshield makes repeated references to adverse effects reported by users of mobile phones (cell phones in the US) implicating the interaction between the electromagnetic energy radiating from the phones and the metal fillings in the users' teeth.
e.g., "Many mobile (cell phone) users report burning sensations and toothache in teeth with fillings and also an unpleasant metallic taste in their mouth."
See:
http://www.microshield.co.uk/latest_news.html
In order to discredit the veracity of such reports scientifically it might be considered necessary to have some knowledge of the behavior of metal amalgam dental fillings with regard to their interaction with electromagnetic energy.
For example, it might be necessary to establish that amalgam fillings are not able to attenuate electromagnetic signals at the frequencies used by cell phones, or that any energy which is absorbed by the fillings could not be dissipated to their surroundings in the form of an electric current.
These things can only be done by measuring the electromagnetic behavior of the material in question.
However, if experimental studies to determine the permeability, permittivity and conductivity of amalgams have never been carried out then the relevant properties of the material are not known, and it might therefore not be possible to discredit reports such as those quoted above with any degree of scientific authority.
It should require a complete description of the electromagnetic behavior of the material in order to do this.
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Amalgam fillings are placed in children's teeth.
Keith P Walsh
PS, further enquiries regarding the electrical properties of dental amalgams can be found at:
http://book.boot.users.btopenworld.com/intro.htm

"Keith P Walsh"> .................
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Keith those MicroShields seem a little pricey. Have you bought one yet or do you still just put a bucket over your head when using your cell phone?
carabelli

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If you can describe the permittivity, permeability and conductivity of a material, you can describe completely how electromagnetic energy behaves within that material. (*)
The permittivity of a material is measured in farads per metre.
The permeability of a material is measured in henry per metre.
The conductivity of a material is measured in siemens per metre.
Do you know what the values of these properties are for a typical dental amalgam?
Or are you just as ignorant as everyone else?
Keith P Walsh
(*) http://www.goreelectronics.com/products/emi/Electromagnetic_Material_Character.html

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or
Evidentally, you don't know what these values are or you would already know the answer, wouldn't you Keith? This suggest that, just perhaps, you yourself are ignorant.
Go do your homework.
carabelli
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http://www.goreelectronics.com/products/emi/Electromagnetic_Material_Charact er.html

On Tue, 2 Mar 2004 07:23:44 +0000 (UTC), Keith P Walsh
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Insults ? Mr. Walsh, you should not do that... This is not a kindergarten.
Regards,
Aribert Deckers

Crap.
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On Mon, 1 Mar 2004 21:22:13 +0000 (UTC), "John Chewter"
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Are you saying that it is not possible to find out what the electromagnetic properties of dental amalgams are?
Keith P Walsh

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Yes, Thor has struck down all that challenge his domain. Any other questions?
carabelli

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What are you getting at? EM fields are everywhere. If you are trying to say EM fields + amalgams = danger, then you are totally off base and any research that suggest this is pure and utter junk. Please stop grasping at random straws like this.
I've told you more than 5 times to go look up mu and epsilon for the materials comprising amalgams. Why haven't you done this yet?

You you are saying that electromagnetism is everywhere including dental fillings so dentists are pizining people?
JOEL
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On Sun, 29 Feb 2004 13:24:07 +0000 (UTC), "John Chewter"
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No physics course is complete without measuring amalgams -- According to Keith its 350 millivolts ..........
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....... or 100,000 amalgams ,,, according to Keith again .....
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