On 8 Feb, 22:33, Steven Bornfeld <dentaltwinm...[at]earthlink.net> wrote:

- quote -

Ok ipse dixit, I believe you!

This stuff really belongs in "The Difference Between an Alloy and an
Amalgam" anyway.

I suggest that Peter Bowditch should go and read it.

And Jan should carry on calling mercury amalgams "mercury amalgams".

Back to the topic of this thread - the ban on all uses of mercury
which is to be imposed in Sweden will mean that mercury amalgams will
no longer be used by dentists in Sweden at all.

I would suggest that under these circumstances, Sweden will be placing
itself in a unique position to help answer some important questions
regarding the possible effects which amalgam fillings may have been
having on people's health, questions which have been the focus of
argument for some time.

Ever since mercury-based dental amalgams were first used in the early
19th century there has existed controversy over whether or not the
presence of such fillings in the mouth is detrimental to patients'
health and/or well-being.

Indeed, it has been argued that the widespread adoption of amalgams
for use in restorative dentistry was quickly followed by the rise to
prominence of psychiatric "medicine" in our societies, and that these
two facts might not be unrelated.

By imposing a sudden end to the use of mercury dental fillings, it
should be possible for the Swedish government to monitor any resulting
changes in the general health of its population at large.

To this purpose, I would urge the government of Sweden to put in place
adequate monitoring procedures so that, following a suitable interval
of time after the mercury ban takes effect, they may be able to derive
answers to the following types of questions:

1) In general, are our citizens happier and more contented?
2) Has there been any reduction in our suicide rate?
3) Has there been any reduction in the diagnosis of cases of clinical
depression?
4) Has there been any reduction in the diagnosis of cases of tinnitus
(ringing in the ears)?
5) Has there been any reduction in the diagnosis of cases of chronic
headache?
6) Has there been any decline in the type of behaviour sometimes
referred to as "teenage angst"?
7) Have discipline and/or achievement in schools improved?
8) Have there been any reductions in crime rates?
9) Has there been any reduction in the rate of alcoholism?
10) Are our dental surgeons happier in their work?

Other factors notwithstanding, only then might it be possible to offer
some judgement as to how significant a detrimental effect the use of
amalgam dental fillings has been having on the people of Sweden until
now.

Would you agree?

Best regards,

Keith P Walsh

PS,

As a result of my own enquiries and personal experiences I have come
to believe that the electrical potentials generated by metal amalgam
dental fillings are able to dissipate electrical energy through the
nerves in people's heads and, in so doing, make people feel unhappy.

And in extreme though not unusual cases they are also able to cause
permanent neurological injury which cannot be repaired simply by the
removal of the fillings.

As far as I (or anyone else for that matter) know, the electrical
behavior of gallium amalgams should be similar to that of mercury
amalgams. I hope that the people of Sweden (or anywhere else) would
have the good sense to check this first before assuming that gallium
amalgams would be "safe" for use as dental fillings simply because
they don't have any mercury in them.

Keith P Walsh wrote:
- quote -


I'm sure if you checked it you're correct--that I haven't asserted that
in this ng since 2005--hence, I suppose, that I no longer assert that!
Thanks for the clarification! ;-)

Ipse dixit!

S.

On 7 Feb, 15:10, Mark & Steven Bornfeld <bornfeldm...[at]dentaltwins.com>
wrote:

- quote -

Don't worry Aristotle, I'll carry on all right. 'Cos I got you by the
balls!

Usenet newsgroup sci.med.dentistry; thread: "Mercury Amalgams"; 18
June 2005 - here's what you wrote:

- quote -

Now, try as I might, I don't think there's any way I can ERRONEOUSLY
infer from this that you had asserted that the term "mercury amalgam"
is a pleonasm.

I think you done asserted it boy!

So, if someone means "mercury amalgam", but only says "amalgam", how
am I going to know that they don't mean "gallium amalgam" (which
doesn't have any mercury in it), or "indium amalgam (which doesn't
have any mercury in it either)?

I suspect that you can see now that the term "mercury amalgam" is NOT
a pleonasm.

And I think that you may have simply blotted out the memory of the
ridiculously sarcastic way in which you asserted the opposite back in
'05, perhaps in some sort of subconscious attempt to maintain a
delusion that you always know what you are talking about.

Keith P Walsh

PS, By the way, gallium amalgams and indium amalgams are no more
"alloys" than mercury amalgams are. They are at best inhomogeneous
mixtures of more than one alloy, and they are more accurately
described as "inhomogeneous mixtures of dissimilar mixtures of metals"
- and you might expect their electrical behaviors to correspond
accordingly (don't forget about the thermoelectric eddy currents
generated by inhomogeneous materials).

PPS, In the event that it was someone else who logged onto your
computer and submitted that 2005 message on your behalf, and without
your permission, then I apologise for the incriminatory tone of the
above. (In fact it might be your best bet to claim that's what
happened.)

PPPS, I've just noticed that I've been spelling your name incorrectly
(I'm referring to Bornfeld here, not Aristotle). Apologies for that.

Keith P Walsh wrote:
- quote -


If you inferred that from something I have said, it was inferred
erroneously.
And even if I DID assert that, I ain't no Aristotle here.

Carry on, Keith!


Steve



- quote -


--
Mark & Steven Bornfeld DDS
http://www.dentaltwins.com
Brooklyn, NY
718-258-5001

On 7 Feb, 09:05, Peter Bowditch <myfirstn...[at]ratbags.com> wrote:

- quote -

The term "mercury amalgam" properly distinguishes the material in
question from, for example, a "gallium amalgam" or an "indium
amalgam".

Material scientists understand this distinction.

However, it is clear that in the past many dentists and large sections
of the general public have been misled (or have misled themselves)
into believing incorrectly that the use of term "mercury amalgam" is
erroneous.

It isn't. (see Explanation below)

Even Steven Bornfield no longer bothers to assert that the term
"mercury amalgam" is a pleonasm.

So wise up Peter Bowditch - it isn't Jan who's being ludicrous.

It's you.

Keith P Walsh

Explanation:

It is a common misconception that by definition an amalgam must have
mercury init.

That "an amalgam" has come to imply mercury, particularly in the
dental profession, is simply because mercury amalgams are the most
common.

But mercury amalgams are NOT the only types of amalgams, as you can
see by extracts from the book, "Principles of Soldering", by Giles
Humpston and David M Jacobson, published by ASM International (April
2004) and endorsed by The Materials Information Society.

The parts which are of interest to us are:

Page 115 - Section 5.4.1 - Amalgams Based on Mercury

Page 116 - Section 5.4.2 - Amalgams Based on Gallium

"Gallium melts at 29 deg C and is therefore a potential base for
formulating very low-process-temperature amalgams without the toxic
hazard associated with mercury"

(Note, there's no mercury in these amalgams.)

Page 117 - Section 5.4.3 - Amalgams Based on Indium

"Indium is another liquid metal that can be considered as a base for
amalgam systems. "

(There's no mercury in these amalgams either.)

You can find details of this book at:

http://books.google.com/books?id=cQ6...dq=%22gallium+...

When I first quoted these pages (see message in thread "Lessons on
Alloys, Amalgams, and Pleonasms (2)" of 1 September 2007)
they were available for reading at the above URL.

Unfortunately it looks like since then they've been made unavailable!
(I tell ya, if I were a conspiracy theorist ... ).

Anyway the quotes are genuine.

So there are at least three types of amalgam known to materials
science; gallium amalgams, indium amalgams, and mercury amalgams.

Think on it.

"Jan Drew" <jdrew1374[at]sbcglobal.net> wrote:

- quote -

Please apply the "banish tautology" patch to the JanBot software. The
ludicrosity of the ridiculous expression "mercury amalgam" has been
pointed out many times.

--
Peter Bowditch aa #2243
The Millenium Project http://www.ratbags.com/rsoles
Australian Council Against Health Fraud http://www.acahf.org.au
Australian Skeptics http://www.skeptics.com.au
To email me use my first name only at ratbags.com

"kris-polanowski" <hsm.a.polanowska[at]neostrada.pl> wrote in message
news:a2a830cf-8554-4da8-b4db-66a10d27e5fc[at]e1g2000pra.googlegroups.com...
On Jan 30, 1:56 am, Mike <M...[at]xyz.xxx> wrote:
- quote -


Amalgams is not bad.

Is? That should be *are*.

However the equal materials and not toxic are
avaiable like Diamond lite polyceram..
The insurances in Europe based on "turn over" the time for patient is
5-10 minutes. There is in england , nederlands perhaps in Sweden )
Take into consideratiuon so anaesthsia works after couple minutes )
Perhaps main reason in Sweden was time. It takes less time for
glasionomers like for amalgams

regards kris Polanowski DDS
www.stomapol.pl

Amagams are very bad.

Mercury-amalgam dental fillings have never been subjected to the kind of
regulatory scrutiny and approval process demanded of all modern drugs and
medical devices to prove safety.

Until this day dentistry has used marketing, political influence, and
control of regulatory boards at all levels to impose its self-serving
economic view that mercury-amalgam is completely safe. The science that
proves safety is still not forthcoming from the ADA, nor from dental
schools, nor from mercury-amalgam manufacturers.
Science has not been the driving force behind the ADA's public information
on mercury release. When asked about the safety of mercury amalgam the
response one always heard previously, and can still hear today in many
dental offices is: "once set, the mercury becomes completely stable and
locked up, it doesn't leak out". After it was unequivocally demonstrated
that mercury vapor continuously escapes from mercury-amalgam fillings the
ADA repositioned itself and now claims: "the small amount of mercury
released from amalgam restorations, especially during placement and removal,
has not been shown to cause any adverse health effects."

Mercury escapes from amalgam and is taken up by the human as metallic vapor,
metallic vapor and ionic mercury dissolved in saliva, and as unknown mercury
species directly through the tooth pulp and root into the bloodstream.[3]
Ionic mercury in saliva is converted to methylmercury.[4]

Mercury travels from amalgam fillings into the jaw, gut, liver, kidneys,
glands and brain, crosses the placenta to the fetus, and is found in
mother's milk.[18] [19] [20] [21] [22]




WARNING TO PARENTS:













"SILVER" FILLINGS ARE REALLY 50% MERCURY!













THE AMERICAN DENTAL ASSOCIATION SAYS THEY ARE SAFE!
CONCERNED PARENTS SHOULD KNOW:







MERCURY has been eliminated from all other uses in the human body, including
vaccines, disinfectants, and other oral uses.

All other health care associations support full disclosure, while the
American Dental Association hides its use of MERCURY.

The ADA receives money from MERCURY amalgam manufacturers through its Seal
of Acceptance program, in contrast with the American Medical Association,
which rejected taking fees for product endorsements.

The ADA holds patents on amalgam (since expired), furthering its business
interests by the continued use of MERCURY in dentistry.

The ADA endorses pre-Civil War medicine, saying amalgam is justified because
its use began in 1850!

The ADA says MERCURY dental fillings are safe to use in children's teeth.

In 1997, MERCURY amalgam filling manufacturer Dentsply stated that MERCURY
amalgam fillings are "contraindicated" (meaning DO NOT USE) for children and
pregnant women.

The American Dental Association is still calling MERCURY amalgam fillings
"silver" and denies MERCURY fillings can ever be dangerous!

Federal and most state medical insurance programs only pay for MERCURY
fillings because they are the least expensive, so poor people and poor
children are especially at risk.

U.S. Public Health Service: The largest component of amalgam is MERCURY.
ADA: Amalgam is "silver" fillings.

U.S. Public Health Service: For most people, the leading cause of MERCURY
toxicity is amalgam fillings, not fish.
ADA: You only get traces of MERCURY vapor in your body.

U S Public Health Service: MERCURY is a dangerous neuro-toxin; the MERCURY
in amalgam goes to the brain, and to a fetus through the placenta.
ADA: MERCURY exposure is like having an "allergy" to dust or pollen!

American Medical Association: Don't take $$$ for endorsements.
ADA: Receives fees from MERCURY amalgam manufacturers while calling amalgam
"safe". For further information on this issue and links to recent press
coverage of the controversy with the ADA and the dangers of Mercury in
dentistry, please read the August 22 Page 1 article in the Chicago Tribune:
http://chicagotribune.com/news/local...i%2Dnews%2Dhed
and visit: www.toxicteeth.net

kris-polanowski wrote:
- quote -

Hey Kris--

I am not aware of any material being marketed in the states as Diamond
lite polyceram--it appears to be a hybrid BIS-gma resin?

Steve

- quote -

On Jan 30, 1:56*am, Mike <M...[at]xyz.xxx> wrote:
- quote -


Amalgams is not bad. However the equal materials and not toxic are
avaiable like Diamond lite polyceram..
The insurances in Europe based on "turn over" the time for patient is
5-10 minutes. There is in england , nederlands perhaps in Sweden )
Take into consideratiuon so anaesthsia works after couple minutes )
Perhaps main reason in Sweden was time. It takes less time for
glasionomers like for amalgams

regards kris Polanowski DDS
www.stomapol.pl

"Keith P Walsh" <keith.p.walsh[at]btinternet.com> wrote in message
news:41846405-4d0c-4e6b-b798-303fc2370c1f[at]r36g2000prf.googlegroups.com...
- quote -

You are most welcome. No apology necessary.
- quote -

On 20 Jan, 23:29, "Jan Drew" <jdrew1...[at]sbcglobal.net> wrote:

- quote -

Jan,

I refer to the Swedish government press release, "Government bans all
use of mercury in Sweden", see:

http://www.sweden.gov.se/sb/d/11459/a/118550

Thank you for bringing this announcement to the attention of the
group. (May I also offer my apologies for not having noticed it
earlier.)

It is clear that the announced ban applies to all uses of mercury in
Sweden, and also that the official reason for this ban is the Swedish
government's concern for the environment in general.

However, one obvious and inevitable consequence of such a ban is that
amalgam dental fillings containing mercury will no longer be placed in
patients' teeth by dentists practising in Sweden.

I would like to suggest that under these circumstances, Sweden will be
placing itself in a unique position to help answer some important
questions regarding the possible effects which amalgam fillings may
have upon people's health, questions which have been the focus of
argument for some time.

Ever since mercury-based dental amalgams were first used in the early
19th century there has existed controversy over whether or not the
presence of such fillings in the mouth is detrimental to patients'
health and/or well-being.

Indeed, it has been argued that the widespread adoption of amalgams
for use in restorative dentistry was quickly followed by the rise to
prominence of psychiatric "medicine" in our societies, and that these
two facts may not be unrelated.

By imposing a sudden end to the use of mercury dental fillings, it
should be possible for the Swedish government to monitor any resulting
changes in the general health of its population at large.

To this purpose, I would urge the government of Sweden to put in place
adequate monitoring procedures so that, following a suitable interval
of time after the mercury ban takes effect, they may be able to derive
answers to the following types of questions:

1) In general, are our citizens happier and more contented?
2) Has there been any reduction in our suicide rate?
3) Has there been any reduction in the diagnosis of cases of clinical
depression?
4) Has there been any reduction in the diagnosis of cases of tinnitus
(ringing in the ears)?
5) Has there been any reduction in the diagnosis of cases of chronic
headache?
6) Has there been any decline in the type of behaviour sometimes
referred to as "teenage angst"?
7) Have discipline and/or achievement in schools improved?
8) Have there been any reductions in crime rates?
9) Has there been any reduction in the rate of alcoholism?
10) Are our dental surgeons happier in their work?

Other factors notwithstanding, only then might it be possible to offer
some judgement as to how significant a detrimental effect the use of
amalgam dental fillings has been having on the people of Sweden until
now.

Best regards,

Keith P Walsh

PS, In 1992 I wrote a series of letters enquiring about the electrical
behaviour of metal amalgam dental fillings. You can find them at:

http://book.boot.users.btopenworld.com/intro.htm

As a result of the response to these letters, and of my own personal
experiences both before and after they were written, I have come to
believe that the electrical potentials generated by metal amalgam
dental fillings are able to dissipate electrical energy through the
nerves in people's heads and, in so doing, make them unhappy.

And in extreme though not unusual cases they are also able to cause
permanent neurological injury which cannot be repaired simply by the
removal of the fillings.

For a more detailed indication of the reasoning behind these beliefs
visit:

http://www.its.org/node/5540

I bet its his even more evil twin brother! )


On Jan 24, 10:04*pm, "Jan Drew" <jdrew1...[at]sbcglobal.net> wrote:
- quote -

Peter Bowditch wrote:
- quote -

Maybe, in Australia. Maybe in Sweden too (quite likely, given this ban).
As for the US (which is not the topic here, but anyway) even childhood
flu vaccines contain thimerosal.

- quote -

It says mercury-free is available *in limited quantities*, did you get it?

- quote -

I cannot keep up with Australia which is also not the topic.

- quote -

On Jan 21, 8:56*am, Linda <Indomitab...[at]netzero.com> wrote:
- quote -

to keeping themselves very happy indeed healthy

Original groups restored. Make a note of it.

"Bob Officer"

Sweden bans amalgam effective June 1 2009

Subject: Sweden bans amalgam effective June 1 2009 A press release from the
Swedish Ministry of Environment follows.


http://www.sweden.gov.se/sb/d/11459/a/118550


Press release 15 January 2009 Ministry of the Environment


Government bans all use of mercury in Sweden The Government today decided to
introduce a blanket ban on mercury. The ban means that the use of dental
amalgam in fillings will cease and that it will no longer be permitted to
place products containing mercury on the Swedish market.


"Sweden is now leading the way in removing and protecting the environment
from mercury, which is non-degradable. The ban is a strong signal to other
countries and a Swedish contribution to EU and UN aims to reduce mercury use
and emissions," says Minister for the Environment Andreas Carlgren.


The Government's decision means that products containing mercury may not be
placed on the Swedish market. In practice this means that alternative
techniques will have to be used in dental care, chemical analysis and the
chloralkali industry. The Swedish Chemicals Agency will be authorised to
issue regulations on exceptions or grant exemptions in individual cases.


In connection with the Government's decision, waste containing mercury will
be disposed of in deep geological repositories in other EU countries. The
Swedish market for hazardous waste is small. Last spring, a government
inquiry established that there are existing repositories for waste
containing mercury in, for example, Germany that more than adequately meet
the safety requirements on which Swedish legislation is based. Creating a
new Swedish repository would be around 15 times more expensive than
depositing waste in existing facilities in the EU. The bodies consulted on
this matter shared the inquiry s conclusions.


"By using common solutions and almost forty years of experience of storing
mercury in the EU, we are not lowering safety standards. The waste will be
transported to a deep geological repository with high safety standards. In
accordance with the polluter pays principle, the owners of the waste will be
responsible for ensuring that disposal in a repository is arranged and
paying for it," says Mr Carlgren.


The disposal possibilities in other EU countries provide better incentives
for the desired development of safe, large-scale technologies to stabilise
waste containing mercury.


Since the beginning of the 1990s there has been a ban in Sweden on the
manufacture and sale of certain products containing mercury, including
thermometers and other measuring devices and electronic components.


The new regulations enter into force on 1 June 2009.

"Bob Officer" <bobofficers[at]127.0.0.7> wrote in message
news:rsoqn4lmvlcsuvtagecil4uu1m119iv3jp[at]4ax.com...
- quote -

One of your problems is you are a poor simple minded bloke.
Blokes are responsible for all the crime in the world, pedophiles, rapists
etc.
Do you think I'd listen to anything you say?

- quote -

I know alt.usenet.kooks is your stomping ground, the group which you
affiliate with most closely.
I think that is rather telling, Butthead.

C.

- quote -

On Fri, 23 Jan 2009 13:06:10 GMT, in misc.health.alternative,
"Carole" <hubbca[at]iimetro.com.au> wrote:

- quote -

You think? Wait there is still no evidence that you have ever thought
or are able to think.

- quote -

<sigh>
Most high quality mirrors are coated with silver
</sigh>

- quote -

I do know where to look up the toxicity of various light and heavy
metals.

But then Maybe my opinion is worth something. However, Carole, it is
early to start campaigning for your VVF weird science award.

Keep it up and you may earn a few extra nominations.




--
Ak'toh'di

"Peter Bowditch" <myfirstname[at]ratbags.com> wrote

- quote -

Blatant
completely obvious, conspicuous, or obtrusive especially in a crass or
offensive manner : brazen <blatant disregard for the rules>

Lie

1 : to make an untrue statement with intent to deceive
2 : to create a false or misleading impression

No slur just the truth.



- quote -

http://www.vaccinesafety.edu/thi-table.htm
- quote -

Not the issue, your blatant lie is.

"Jan Drew" <jdrew1374[at]sbcglobal.net> wrote:

- quote -

I realise that you don't understand the meaning of the word "lie" so I
will forgive you for the slur.

- quote -

So, the only one without a mercury-free alternative is the adult one
given after exposure to possible tetanus infection. Nobody is ever
forced to have this vaccine, so the next time you cut yourself while
gardening feel free to contract tetanus. It would merely spread your
rigid thinking to your entire body.

--
Peter Bowditch aa #2243
The Millenium Project http://www.ratbags.com/rsoles
Australian Council Against Health Fraud http://www.acahf.org.au
Australian Skeptics http://www.skeptics.com.au
To email me use my first name only at ratbags.com

http://www.ncbi.nlm.nih.gov/pubmed/9481913?ordinalpos=1&itool=EntrezSystem2.PEntrez.P ubmed.Pubmed_ResultsPanel.Pubmed_DiscoveryPanel.Pu bmed_Discovery_RA&linkpos=4&log$=relatedreviews&lo gdbfrom=pubmed

Inorganic mercury is absorbed in small amounts from dental amalgam fillings.
Exposure can be calculated by measuring the level of mercury in the blood or
urine (u-Hg). The average u-Hg in Norwegians is approximately 2-3
micrograms/g creatinine (approximately 1-2 nmol/mmol creatinine). Classic
signs of mercury poisoning occur in a fraction of long-term exposed subjects
with u-Hg > 100 micrograms/g creatinine (56 nmol/mmol creatinine). Subtle
effects (e.g. enzymuria, altered selenium metabolism, and changes in tremor
spectra) have been reported in humans at average levels of 20-35
micrograms/g creatinine (approximately 11-20 nmol/mmol creatinine). There is
widespread concern about possible adverse effects of mercury from amalgam
fillings. Data on exposure-response relationships make it less likely that
low-level mercury exposure from amalgam fillings should cause symptoms or
physical signs. Studies of the association between symptoms and amalgam
fillings have been negative. Patients with symptoms allegedly caused by
mercury from amalgam should undergo thorough medical examination. Based on
the patient's symptoms and physical signs adequate time should be allowed
for careful recording of medical history, physical examination and relevant
laboratory tests.

PMID: 9481913 [PubMed - indexed for MEDLINE]

Occupational exposure to mercury from amalgams during pregnancy.

http://www.planetark.com/dailynewsst...5721/story.htm


LONDON - Dentists are more likely to suffer memory and kidney problems
which could be due to long-term exposure to mercury in tooth fillings,
doctors said today.


A study of 180 dentists by researchers at the Glasgow Royal Infirmary
in Scotland found they had up to four times the normal level of mercury in
their urine and nails and had more kidney disorders and memory lapses than
the general public.
"We found several differences in the health and cognitive functioning
between our dentists and the control group," Dr Ewan Macdonald said in a
report in the Journal of Occupational and Environmental Medicine.


"These differences could not be directly attributed to their exposure
to mercury, but as mercury exposure at higher levels is known to cause
similar health effects an association cannot be ruled out," he added.


Mercury has been used in dentistry for about 150 years but some
dentists and researchers believe the fillings can give off harmful vapours
that can be dangerous for dentists and patients.


Critics of the fillings claim the mercury can poison the body and lead
to health problems affecting the kidneys and other organs and neurological
diseases such as Alzheimer's.


But dental associations say it is safe when mixed with other metals
and there are no scientific studies to prove a link between the filling and
health problems.


The researchers in Glasgow compared mercury levels in urine, hair and
nail samples and the results of psychomotor skills, response times, word
recall and health problems of the 180 dentists and an equal number of
volunteers.


The dentists had higher levels of the metal in their bodies, reported
more health problems and did worse on the tests than the volunteers.


"The prevalence of self reported renal disease and memory disorders
reflects other reports and suggests that these may be occupationally
related," Macdonald added.


http://www.zipworld.com.au/~rgammal/...y_Healthy.html


http://tinyurl.com/ccz3


Health and neuropsychological functioning of dentists exposed to mercury.


Ritchie KA, Gilmour WH, Macdonald EB, Burke FJ, McGowan DA, Dale IM,
Hammersley R, Hamilton RM, Binnie V, Collington D.


Institute of Hearing Research (Scottish Section), Glasgow Royal Infirmary,
Glasgow, Scotland, UK. k...[at]ihr.gla.ac.uk


OBJECTIVES: A cross sectional survey of dentists in the west of Scotland and
unmatched controls was conducted to find the effect of chronic exposure to
mercury on health and cognitive functioning. METHODS: 180 dentists were
asked to complete a questionnaire that included items on handling of
amalgam, symptoms experienced, possible influences on psychomotor function,
and the 12 item general health questionnaire. Dentists were asked to
complete a dental chart of their own mouths and to give samples of urine,
hair, and nails for mercury analysis. Environmental measurements of mercury
in dentists' surgeries were made and participants undertook a package of
computerised psychomotor tests. 180 control subjects underwent a similar
procedure, completing a questionnaire, having their amalgam surfaces
counted, giving urine, hair, and nail samples and undergoing the psychomotor
test package. RESULTS: Dentists had, on average, urinary mercury
concentrations over four times that of control subjects, but all but one
dentist had urinary mercury below the Health and Safety Executive health
guidance value. Dentists were significantly more likely than control
subjects to have had disorders of the kidney and memory disturbance. These
symptoms were not significantly associated with urinary mercury
concentration. Differences were found between the psychomotor performance of
dentists and controls after adjusting for age and sex, but there was no
significant association between changes in psychomotor response and mercury
concentrations in urine, hair, or nails. CONCLUSIONS: Several differences in
health and cognitive functioning between dentists and controls were found.
These differences could not be directly attributed to their exposure to
mercury. However, as similar health effects are known to be associated with
mercury exposure, it would be appropriate to consider a system of health
surveillance of dental staff with particular emphasis on symptoms associated
with mercury toxicity where there is evidence of high levels of exposure to
environmental mercury.


PMID: 11983843 [PubMed - indexed for MEDLINE]


http://tinyurl.com/dbhg9


Neurophysiological and neuropsychological function in mercury-exposed
dentists.


Shapiro IM, Cornblath DR, Sumner AJ, Uzzell B, Spitz LK, Ship II, Bloch P.


In a study of the relation between cumulative exposure to mercury and
chronic health impairment 298 dentists had their mercury levels measured by
an X-ray fluorescence technique. Electrodiagnostic and neuropsychological
findings in the dentists with more than 20 micrograms/g tissue mercury
levels were compared with those of a control group consisting of dentists
with no detectable mercury levels. 30% of the 23 high mercury dentists had
polyneuropathies. No polyneuropathies were detected in the control group.
The high mercury group had mild visuographic dysfunction; they also had more
symptom-distress than did the control group. These findings suggest that the
use of mercury as a restorative material is a health risk for dentists.


PMID: 6122938 [PubMed - indexed for MEDLINE]


http://tinyurl.com/msg59


Neuropsychological effects of low mercury exposure in dental staff in
Erzurum, Turkey.


Aydin N, Karaoglanoglu S, Yigit A, Keles MS, Kirpinar I, Seven N.


Ataturk Universitesi, Tip Fakultesi, Psikiyatri Anabilim Dali, 25240
Erzurum, Turkey. nmd...[at]hotmail.com


OBJECTIVE: To carry out measurements of the Hg levels and personal exposure
in Turkish dental clinics, and to evaluate possible adverse effects on the
CNS in dental personnel. SETTING: Five dental clinics (1 private, 4 public)
in Erzurum, Turkey. SUBJECTS AND METHODS: 43, Hg vapour-exposed dental staff
were examined and 43 hospital employees with no known exposure to Hg acted
as the control group. Hg concentrations in plasma and urine were analysed by
atomic absorption spectrophotometry. Possible effects on the central nervous
system (CNS) were estimated by neuropsychological tests (Weschler Memory
Scale-Revised (WMS-R) and Verbal Test of Memory Processes (VTMP)) and two
self-administered questionnaires (Symptom Checklist-90-Revised (SCL-90-R)
and Beck Depression Inventory (BDI)). RESULTS: The dental staff group had
higher whole blood (B-Hg) and urine (U-Hg) Hg levels than the control group.
The mean B-Hg value was 2.18 nmol/l and U-Hg was 1.17 nmol/mmol creatinine.
U-Hg had an inverse relationship with logical memory (in WMS-R test) and
total retention score (in VTMP test), and a positive relationship with
increased scores of Anxiety and Psychoticism (in SCL-90-R). CONCLUSION:
These results may represent long-term consequences of low Hg exposure. In
dentistry, to decrease toxic effects, proper Hg hygiene should be practiced
by all dental health care workers.


http://tinyurl.com/z6jhk


Behavioral effects of low-level exposure to elemental Hg among dentists.


Echeverria D, Heyer NJ, Martin MD, Naleway CA, Woods JS, Bittner AC Jr.


Battelle Center for Public Health Research and Evaluation (CPHRE), Seattle,
WA 98105, USA.


Exposure thresholds for health effects associated with elemental mercury (Hg
degree) exposure were examined by comparing behavioral test scores of 19
exposed (mean urinary Hg = 36 micrograms/l) with those of 20 unexposed
dentists. Thirty-six micrograms Hg/l is 7 times greater than the 5
micrograms Hg/l mean level measured in a national sample of dentists. To
improve the distinction between recent and cumulative effects, the study
also evaluated porphyrin concentrations in urine, which are correlated with
renal Hg content (a measure of cumulative body burden). Subjects provided an
on-site spot urine sample, were administered a 1-h assessment consisting of
a consent form, the Profile of Mood Scales, a symptom and medical
questionnaire, and 6 behavioral tests: digit-span, symbol-digit
substitution, simple reaction time, the ability to switch between tasks,
vocabulary, and the One Hole Test. Multivariate regression techniques were
used to evaluate dose-effects controlling for the effects of age, race,
gender and alcohol consumption. A dose-effect was considered statistically
significant below a p value of 0.05. Significant urinary Hg dose-effects
were found for poor mental concentration, emotional lability, somatosensory
irritation, and mood scores. Individual tests evaluating cognitive and motor
function changed in the expected directions but were not significantly
associated with urinary Hg. However, the pooled sum of rank scores for
combinations of tests within domains were significantly associated with
urinary Hg, providing evidence of subtle preclinical changes in behavior
associated with Hg exposure. Coproporphyrin, one of three urinary porphyrins
altered by mercury exposure, was significantly associated with deficits in
digit span and simple reaction time.(ABSTRACT TRUNCATED AT 250 WORDS)


Publication Types:
a.. Clinical Trial
b.. Randomized Controlled Trial


PMID: 7760775 [PubMed - indexed for MEDLINE]


http://tinyurl.com/qehsr


Women in dental surgeries: reproductive hazards in occupational exposure to
metallic mercury.


Sikorski R, Juszkiewicz T, Paszkowski T, Szprengier-Juszkiewicz T.


Clinic of Gynaecology, Institute of Obstetrics and Gynaecology, Academy of
Medicine, Lublin, Poland.


Eighty-one women (45 dentists and 36 dental assistants) occupationally
exposed to metallic mercury underwent a toxicoclinical examination. Total
mercury lebels (TMLs) were determined in scalp and pubic hair by cold vapour
AAS. Furthermore a detailed questionnaire study was made concerning adverse
reproductive events. TMLs in the hair of the exposed women examined exceeded
significantly those determined in the hair of 34 controls not exposed to
mercury. All exposed women had continued working during pregnancy. There was
a significant, positive association between TMLs in the hair of exposed
women and the occurrence of reproductive failures in their history. The
relation between TMLs in the scalp hair and the prevalence of menstrual
cycle disorders was statistically significant. These findings indicate that
dental work could be another occupational hazard with respect to
reproductive processes.


PMID: 3679554 [PubMed - indexed for MEDLINE]


http://tinyurl.com/rvmr5


Neurophysiological and neuropsychological function in mercury-exposed
dentists.


Shapiro IM, Cornblath DR, Sumner AJ, Uzzell B, Spitz LK, Ship II, Bloch P.


In a study of the relation between cumulative exposure to mercury and
chronic health impairment 298 dentists had their mercury levels measured by
an X-ray fluorescence technique. Electrodiagnostic and neuropsychological
findings in the dentists with more than 20 micrograms/g tissue mercury
levels were compared with those of a control group consisting of dentists
with no detectable mercury levels. 30% of the 23 high mercury dentists had
polyneuropathies. No polyneuropathies were detected in the control group.
The high mercury group had mild visuographic dysfunction; they also had more
symptom-distress than did the control group. These findings suggest that the
use of mercury as a restorative material is a health risk for dentists.


PMID: 6122938 [PubMed - indexed for MEDLINE]



- quote -


- quote -



Wrong.


- quote -

http://groups.google.com/group/misc....673756ab?hl=en

Newsgroups: misc.health.alternative, sci.med.dentistry
From: Ilena Rose <Ilena>
Date: Fri, 03 Mar 2006 18:47:08 -0600
Local: Fri, Mar 3 2006 7:47 pm
Subject: Washington Dental School Under Assault for *Mercury Poisoning*...

After being haunted by the Quackwatch Team for over 5 years now ...
sometimes I wonder if they could ever surprise me ...

Disinformation Specialist Probert today thru out even more garbage.


The Quackwatch / Junkscience team are deniers of the dangers of
mercury amalgam ... Probert, like Barrett, considers himself an
expert. Sure.


This boy would lie about anything it seems.


His claim below is typical propaganda.


Probert spouts:



- quote -


http://groups.google.com/group/misc....browse_frm/thr...

I went to Medline ... there were 235 studies using that term ... the
first 20 I've copied below.


http://www.BreastImplantAwareness.or...stProbert.html


He just churns out the lies after lies ... this one will go on his
Propagandist Probert website to describe this typical Quackwatch /
Healthfraud behavior ...


Typical of the Quack Gang ... seriously minimize the harm from the
products of their handlers ... and blow out of proportion and throw
out every form of clarity any problem that occurs near an alternative
practice ... when Con Med has failed yet another patient.


http://search.medscape.com/uslclient/searchMedline.do?queryText="mercury%20amalgam"


MEDLINE Results Results 1 - 20 of 235
1 2 3 4 5 6 7 8 9 10 next»


Effect of restoration of children's teeth with mercury amalgam on the
prevalence of mercury- and antibiotic-resistant oral bacteria.The
purpose of this study was to determine whether placement of mercury
amalgam restorations in children's teeth induces an increase in oral
bacteria resistant to mercury, penicillin, ampicillin, erythromycin,
or tetracycline.
from Microb Drug Resist - Jan 2003 - Rachel Pike, Victoria Lucas,
Aviva Petrie, et. al.


Mercury-reactive lymphocytes in peripheral blood are not a marker for
dental amalgam associated disease.OBJECTIVES: The popular press and
publications associated with alternative medicine increasingly report
that chronic ill health, particularly myalgic encephalitis like
conditions, are associated with mercury amalgam fillings.
from J Dent - Sep 2001 - D C Henderson, R Clifford


Scanning electrochemical microscopy imaging of rhodochrosite
dissolution using gold amalgam microelectrodes.Gold/mercury amalgam
(Au/Hg) microelectrodes with a diameter of 25 microm were developed
for the detection of environmentally relevant analytes such as
manganese and iron by scanning electrochemical microscopy (SECM), and
applied to investigate the controlled dissolution of manganese
carbonate (MnCO(3); rhodochrosite) in acidic conditions.
from Analyst - May 2004 - Douglas Rudolph, Stephanie Neuhuber,
Christine Kranz, et. al.


Prevalence and antibiotic resistance profile of mercury-resistant oral
bacteria from children with and without mercury amalgam fillings.Genes
encoding resistance to mercury and to antibiotics are often carried on
the same mobile genetic element and so it is possible that
mercury-containing dental materials may select for bacteria resistant
to mercury and to antibiotics.
from J Antimicrob Chemother - May 2002 - R Pike, V Lucas, P
Stapleton, et. al.


The relationship between amalgam restorations and mercury levels in
male dentists and nondental health professionals.OBJECTIVES: The
objectives of this study were: (1) to compare the mercury levels in
general dentists with the mercury levels in other health professionals
using toenail clippings as a biomarker, (2) to identify risk factors
associated with high mercury levels, and (3) to compare practice
characteristics of dentists with high and low mercury levels.
from J Public Health Dent - Jan 2003 - Anil Joshi, Chester W
Douglass, Hyun-Duck Kim, et. al.


Syntheses, structure, and derivatization of potassium complexes of
penta(organo)[60]fullerene-monoanion, -dianion, and -trianion into
hepta- and octa(organo)fullerenes.Two-electron reduction of
penta(organo)[60]fullerenes C(60)Ar(5)H (Ar = Ph and biphenyl) by
potassium/mercury amalgam afforded potassium complexes of the
corresponding open-shell radical dianions [K+(thf)n]2[C60Ar5(2-.
from J Am Chem Soc - Jun 2005 - Yutaka Matsuo


Urinary mercury concentrations associated with dental restorations in
adult women aged 16-49 years: United States, 1999-2000.BACKGROUND:
Mercury amalgam dental restorations have been used by dentists since
the mid 19th century and issues on safety continue to be periodically
debated within the scientific and public health communities.
from Occup Environ Med - Jun 2005 - B A Dye, S E Schober, C F
Dillon, et. al.


Determination of glutathione in single human hepatocarcinoma cells by
capillary electrophoresis with electrochemical detection.A method for
determination of glutathione (GSH) in single human hepatocarcinoma
(HH) cells was described by capillary zone electrophoresis with
electrochemical detection at a gold/mercury amalgam micro-disk
electrode.
from J Chromatogr B Analyt Technol Biomed Life Sci - Jun 2003 - Wei
Wang, Hua Xin, Honglian Shao


An uncertain risk and an uncertain future: assessing the legal
implications of mercury amalgam fillings.No abstract available
from Health Matrix Clevel - Jan 2004 - Mary Ann Chirba-Martin


Multiple sclerosis and dental amalgam: case-control study in Ferrara,
Italy.Dental amalgam fillings containing mercury have been suggested
as a possible risk factor for multiple sclerosis (MS).
from Neuroepidemiology - May 2001 - I Casetta, M Invernizzi


Dental amalgam and selenium in blood.It has been suggested that
selenium (Se) exhibits protective effects against mercury (Hg)
toxicity in humans due to formation of a Hg-Se complex bound to
selenoprotein P in blood.
from Environ Res - Dec 2001 - P J Høl, J S Vamnes, N R Gjerdet, et.
al.


Transmission electron microscopic study of early stage gamma(1)
(Ag(2)Hg(3)) and beta(1) (Ag-Hg) phases: technical note.Incomplete
reaction, residual free mercury, and high volatility of mercury are
often major causes of the discrepancy in chemical composition of
gamma(1) measured by different methods.
from Dent Mater - Jul 2002 - J H Chern Lin, K I Chen


Occupational hygiene practices of dentists in southern
Thailand.OBJECTIVES: The aims of this study were to investigate the
prevalence and nature of infection control, radiation control and
handling of mercury, reported by dentists in southern Thailand.
from Int Dent J - Feb 2001 - P A Leggat, S Chowanadisai, B
Kukiattrakoon, et. al.


New approaches in the development of DNA sensors: hybridization and
electrochemical detection of DNA and RNA at two different surfaces.Up
to now, the development of the electrochemical DNA hybridization
sensors relied on solid electrodes, on which both the hybridization
and detection steps have been performed.
from Bioelectrochemistry - May 2002 - E Palecek, M Fojta


Determination of mercury in blood, urine and saliva for the biological
monitoring of an exposure from amalgam fillings in a group with
self-reported adverse health effects.It has been argued that the
release of mercury from amalgam fillings is of toxicological
relevance.
from Int J Hyg Environ Health - Apr 2002 - Holger Zimmer, Heidi
Ludwig, Michael Bader, et. al.


Urinary mercury excretion following amalgam filling in
children.OBJECTIVES: Dental amalgam is the major source of inorganic
mercury exposure in the general population.
from J Toxicol Clin Toxicol - Jan 2001 - M Khordi-Mood, A R
Sarraf-Shirazi


Placental transfer of mercury in pregnant rats which received dental
amalgam restorations.Mercury vapor released from one, two and four
amalgam restorations in pregnant rats and mercury concentrations in
maternal and fetal organs were studied.
from Toxicology - Mar 2003 - Yoshifumi Takahashi, Shozo Tsuruta,
Michitoshi Arimoto, et. al.


Oral lichen planus and allergy to dental amalgam
restorations.OBJECTIVES: To determine contact allergies in patients
with oral lichen planus and to monitor the effect of partial or
complete replacement of amalgam fillings following a positive patch
test reaction to ammoniated mercury, metallic mercury, or amalgam.
from Arch Dermatol - Dec 2004 - Ronald Laeijendecker, Sybren K
Dekker, Piet M Burger, et. al.


[The dynamic change of mercury concentration in urine after amalgam
filled]OBJECTIVE: Through the regular examination of mercury
concentration in urine this study was to observe the dynamic change of
the mercury concentration in the patients with amalgam fillings so as
to find out the effect of amalgam on health.
from Shanghai Kou Qiang Yi Xue - Mar 2001 - J Wang


[Amalgam risk assessment with coverage of references up to
2005]Amalgam, which has been in use in dentistry for 150 years,
consists of 50 % elemental mercury and a mixture of silver, tin,
copper and zinc.
from Gesundheitswesen - Mar 2005 - J Mutter, J Naumann, H Walach