No- the danger would be due to relative motion of the teeth with respect to
the body- this danger is at a maximum when engaged in political doubletalk.
Since the life span of a politician is normal, it appears that the risk is
negligable- too bad! :)
I find the following suggestion pretty funny myself. I suppose this is
why nobody takes any personal responsibilty anymore.
"The batteries in my teeth made me do it!"
"I am being controlled by aliens..."
"Low frequency radio waves are controlling my brain..."
The enclosed sheet shows how when a crude electric battery, such as a
metal amalgam filling, is inserted into the tooth of a live human
being, then the innervation of the head (through the upper and lower
mandibles, tongue, sinuses, eyes, bridge of nose, ears and all the way
back to the pons) provides a network of circuitry capable of
dissipating the potential of the battery in the form of an electric
It must be recognised that each individual in society has their own
unique array of tooth batteries and these vary from person to person
with regard to size, number and time of life when each battery was
It is my firm belief that it is the presence of these batteries in
peoples mouths which is causing many to feel that they have inadequate
control of their own lives.
Could you please supply me with any evidence you have which contradicts
Sorry, it is not my job to contradict your beliefs (and I can't
imagine any evidence for the absence of such a hypothetical effect
that would change your mind).
You are welcome to any beliefs that suit you, as long as you don't try
to force me to believe.
It is your job to support your beliefs with evidence and logic, if you
expect to persuade any reasonable person that your beliefs are valid.
You are also free to skip this part and blame the world for not being
inspired by your unfounded presuppositions.
That would put you in large company.
Do you know if experimental investigations have ever been carried out
to measure the response of the neuron to any "net current and
voltage,fields, capacitance, etc produced externally by the amalgam"?
Keith P Walsh
PS, it has been demonstrated experimentally that metal amalgam dental
fillings generate electrical potentials with magnitudes of up to 350
A better question would be what experiments have been carried out
to measure any neural response to electrical input. For example
if someone subjected a tooth nerve directly to a sinusiodal voltage
the nerve couldn't distinguish between that and an amalgam causing
the voltage. If you did such an experiment you could then draw
conclusions about what type of electrical output the amalgam
would require to affect the nerve. In fact electrical pulp testing
does use this principal, but the voltage lead is far away from
the tooth nerve (as opposed to an amalgam which could be placed
very close to the nerve).
As I said before basically the maximum output from the amalgam
is going to be set by the available EM energy traveling in
space, as far as electromagnetism is concerned.
I suppose you could take an antenna (by itself without a power
source) and connect it to a tooth to simulate an amalgam. I think an
antenna or (amalgam antenna) has to be impedance matched to transfer EM
energy efficently though so the exact resistnce of the tooth/neuron
circuit it is connected to would be important. you could also vary the
size of the antenna to see if it picks up different wavlentghs.
You could also take an amalgam and substitute it for an antenna and
see if a radio is able to amplify the EM waves it picks up.
You could also take an amalgam and place it in an experimental circuit
where it is generating some galvanic effect. you could
Add an exteranl Em field and then measure any changes in the circuit
current to see if the EM field has any affect on the electrical
properties of the amalgam. there is an effect called he hall effect
where an external field affects the elecrtical properties of a
semiconductor. if indeed you found that was the case for certain
amalgams mixed a certai way you could then design an experiment where
you subjected a nerve to a voltage (from a voltage generator) that
mimiced the combined galvanic/em modulated output of the amalgam, you
As you can see there are many experiments you can perform by
swapping out components and treating the circuit components as
The only difficulty in assigning a measured value of resistivity to
amalgam is that it is not a single material but a whole class of
materials. Many different compositions are possible (similar to but
the range of alloys possible that might be called solder). But the
resistivity of any specific mixture is ordinarily measurable and all
are metallic conductors.
It is the opinion of our fellow newsgroup contributor billkatz that:
".... because of the high resistance of amalgam, it cannot truly be
classified as a conductor."
Would you disagree with him?
Do you know if anyone has ever measured the electrical resistivity of
a particular dental amalgam?
Keith P Walsh
Well, I just touched the two leads of my ohm meter to one of mine, and
the result was indistinguishable from just touching the leads together
(0.3 ohms, in each case). Such a test doesn't quantify the
resistivity very well, but it puts an upper bound on it. It is
definitely not only a conductor, but a good one.
"Dental amalgam is a mixture of metals consisting of approximately
50% metallic Hg, by weight, mixed with an alloy containing
varying amounts of silver (up to 70%), copper (up to 30%)
and tin (up to 30%), among other potential components
(Berry et al. 1994)."
"Mercury has the property of dissolving nearly all metals,
forming liquid or solid solutions called amalgams.
It amalgamates well with gold, silver and tin, but
does not dissolve iron or platinum.
This is the reason iron flasks and iron vessels
are used to refine mercury.
Curiously, the electrical resistivity of an amalgam
may be less than that of the pure metal,
which is not usually the case for alloys."
"The electrical resistivity (of mercury) is 98.4 μΩ-cm."
As I said before "amalgam" does not have a single value of
resistivity, because it is a rather arbitrary mixture of elemental
metals, and each recipe has a different resistivity.
From: http://en.wikipedia.org/wiki/Mercury_ (metal)
Mercury easily forms alloys with almost all common metals, including
gold, aluminium, and silver, but not iron. Tellurium forms an alloy
also, but it reacts slowly to form mercury telluride. Any of these
alloys is called an amalgam.
On Sat, 10 Sep 2005 17:29:00 +0000 (UTC), Keith P Walsh
billkatz is incorrect. My mercury amalgam fillings conduct just fine.
Nop.e, but I am not a dentist either.
Sometimes I get so tired of the taste of my own toes.
Dough, the stuff, that buys my beer, Ray, the guy that tends the
bar, Me, the guy, who drinks my beer, Far, the distance to the
bar, So, I think I'll have a beer, La, Laa lAA lAh LaH LAA
LAAAH! Tea, no thanks I want a beer, which brings us back to
Dough Dough Dough!
But when challenged to go to the physics department of your local
college/university where they could easily put this question to rest for
you, you continue to ignore this avenue of research
see above. the question is: having provided you with an experimental
procedure by which the electrical resistivity of a typical dental
amalgam CAN be measured, why do you refuse to perform the experiment?
The physics department of your local college/university.
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