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Author Topic:   Your teeth are killing you -- The Amalgam Myth
molbiogirl
Member (Idle past 2668 days)
Posts: 1909
From: MO
Joined: 06-06-2007


Message 1 of 32 (427838)
10-13-2007 4:36 AM


Some believe that amalgam fillings are deadly. Or, at the very least, harmful.
http://www.earthtym.net/merc-links.htm
I did not know (about amalgams' toxicity) until after I had two debilitating, life-threatening leaking mercury amalgams removed at the beginning of September, 1999.
DAMS - Dental Amalgam Mercury Solutions - Info & Resources
* every amalgam daily releases on the order of 10 micrograms of mercury into the body
(i.e. 3,000,000,000,000,000 mercury atoms per day)
* more than 2/3 of the excretable mercury in humans is derived from amalgams
* mercury crosses the maternal placenta into the tissue of a developing fetus
* mercury is capable of inducing auto immunity
* mercury immediately and continually challenges the kidney's functioning
* mercury can enhance the prevalence of multiple antibiotic resistant intestinal bacteria
* people exposed to mercury on a sustained basis are at risk to lowered fertility
Oh noes! 3,000,000,000,000,000 mercury atoms!
Of course, this is rubbish.
The research literature, involving many retrospective studies, has shown the safety of dental amalgam.
Reinhardt JW. Side-effects: mercury contribution to body burden from dental amalgam. Adv Dent Res 1992;6:110-3.
ADA Council on Scientific Affairs. Dental amalgam: update on safety concerns.
JADA 1998;129:494-503.
Saxe SR, Wekstein MW, Kryscio RJ, et al. Alzheimer’s disease, dental amalgam and mercury.
JADA 1999;130:191-9.
Mackert JR, Berglund A. Mercury exposure from dental amalgam fillings: absorbed dose and the potential for adverse effects.
Crit Rev Oral Biol Med 1997;8:410-36.
Osborne JW, Albino JE. Psychological and medical effects of mercury intake from dental amalgam: a status report.
Amer J Dent 1999;12:151-6.
Kingman A, Albertini T, Brown LJ. Mercury concentrations in urine and whole blood associated with amalgam exposure in a U.S. military population.
J Dent Res 1998;77:461-71.
Amalgams have been used for over 100 years. Literally billions of amalgam fillings -- with no ill effect.
The National Multiple Sclerosis Society and the Alzheimer’s and Related Diseases Association have concluded that there is no association between amalgam and human illness.
Yet, there are those who insist there is a link between amalgam fillings and death/debilitating disease.
What say you, EvC?

Replies to this message:
 Message 2 by Kitsune, posted 10-13-2007 5:56 AM molbiogirl has replied
 Message 5 by macaroniandcheese, posted 10-13-2007 10:14 AM molbiogirl has not replied
 Message 32 by ramoss, posted 10-17-2007 12:40 PM molbiogirl has not replied

  
Kitsune
Member (Idle past 4327 days)
Posts: 788
From: Leicester, UK
Joined: 09-16-2007


Message 2 of 32 (427849)
10-13-2007 5:56 AM
Reply to: Message 1 by molbiogirl
10-13-2007 4:36 AM


Amalgam Facts
Well I guess I'm the one you wanted to talk with here, though it has to be said I would have wanted to wait on this topic. I don't have my evidence immediately to hand and I'm spending too much time on this forum. Nevertheless, I will make an introductory response.
Watch this video by the International Academy of Oral Medicine and Toxicology please. It's only 8 1/2 minutes long. It's called "The Smoking Tooth".
As with vaccines, the safety of amalgams has not been demonstrated. There have been no large-scale long-term epidemiological studies performed.
Supposing that such a study proved that amalgams were harmful to some, or even all, people? Can you imagine the court cases? There is a vested interest in preventing this kind of information from emerging.
from the CDC:
Mercury exposure can occur in the dentist's office, as an occupational health hazard.
The nervous system is very sensitive to all forms of mercury. Methylmercury and metallic mercury vapors are more harmful than other forms, because more mercury in these forms reaches the brain. Exposure to high levels of metallic, inorganic, or organic mercury can permanently damage the brain, kidneys, and developing fetus. Effects on brain functioning may result in irritability, shyness, tremors, changes in vision or hearing, and memory problems.
Very young children are more sensitive to mercury than adults. Mercury in the mother's body passes to the fetus and may accumulate there. It can also can pass to a nursing infant through breast milk. However, the benefits of breast feeding may be greater than the possible adverse effects of mercury in breast milk.
Mercury's harmful effects that may be passed from the mother to the fetus include brain damage, mental retardation, incoordination, blindness, seizures, and inability to speak. Children poisoned by mercury may develop problems of their nervous and digestive systems, and kidney damage.
The following information is from the CDC again:
The general population is most commonly exposed to mercury primarily from two sources: (1) eating fish and marine mammals (e.g. whales, seals) that may contain some methylmercury in their tissues or (2) from the release of elemental mercury from the dental amalgam used in fillings. It is not known how much of the elemental mercury released from the dental amalgam is inhaled as mercury vapour, how much is breathed out, how much is swallowed in a liquid form, or how much is converted into a mercuric salt that is either swallowed or directly absorbed into the oral mucosa. Exposure to mercury, however, does not necessarily mean that adverse health effects will result. Health effects depend upon the amount of exposure, the form of mercury, and the route of exposure.
So one, mercury is absorbed from amalgam fillings. Two, there are many "unknowns" about this. Why isn't someone trying to find out then?
From a different pdf file on the same site:
Intake of elemental mercury from dental amalgams is another major contributing source to the total mercury body burden in humans in the general population (WHO 1990, 1991).
Dentists and dental staff, house painters, chemists involved in disposal or recycling of mercury-contaminated wastes are also at risk of exposure.
Other populations at risk of exposure include . . . individuals with a large number of dental amalgams . . . Recent animal and human studies have also identified the uptake, distribution, and rate of excretion of elemental mercury from dental amalgams as another significant contributing source to mercury body burden in humans (Bjorkman et el. 1997; Lorscheider et al. 1995). Because of the wide range of potential exposures and the high retention rate for elemental mercury, dental amalgams potentially represent the largest single contributing source of mercury exposure in some individuals with large numbers (>8) of amalgam fillings.
Estimates from studies are uncertain. They range from >27ug of elemental mercury uptake per day, to 1.2.
Various studies cited by this article have shown that dentists have been exposed to significant concentrations of mercury vapor, and that these amounts appear to have been reduced in recent years due to better mercury hygiene and the reduced use of amalgam restorations.
Here is a well-cited article about the exposure of dentists to mercury worldwide, some of their symptoms, and the contribution to the environment from human waste containing mercury from amalgams. It is a sobering read.
You said:
Amalgams have been used for over 100 years. Literally billions of amalgam fillings -- with no ill effect.
How do you know what the "ill effects" of prolonged low-level exposure are? Just because conditions like fibromyalgia, autism, mental illness, and many others are not consciously linked to mercury from amalgams, how does that mean that there is definitely no connection?
Hypothetical case. A 5-year-old boy. His mother had 10 amalgam fillings present in her mouth while she was pregnant, and during pregnancy she chewed gum and drank coffee, which would have increased her exposure to the mercury from her amalgams. The mercury was passed on in utero and in her breast milk. This boy now has a few amalgam fillings of his own, eats fish or shellfish weekly, and has had a flu jab (which contains thimerosol). What do you think this boy's overall body burden of mercury is? Would you logically expect him to be well?
Before you cite any more studies, I want to know who conducted them, what the possible conflicts of interest were, and who paid for the studies. Anyone who wants to debunk alt med claims and who has the money and the connections can get studies done that show negative results. Studies appearing in prestigious journals are used here as irrefutible proof that an assertion must be correct, but I think it's very important to look into all the details before it's truly valid to make such a conclusion. As we've seen here, even the CDC concedes that exposure to amalgams and amalgam vapor by dentists and dental patients can pose a risk. Any study indicating otherwise is highly suspect.

This message is a reply to:
 Message 1 by molbiogirl, posted 10-13-2007 4:36 AM molbiogirl has replied

Replies to this message:
 Message 3 by Percy, posted 10-13-2007 8:29 AM Kitsune has replied
 Message 9 by molbiogirl, posted 10-13-2007 2:21 PM Kitsune has not replied

  
Percy
Member
Posts: 22493
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


Message 3 of 32 (427858)
10-13-2007 8:29 AM
Reply to: Message 2 by Kitsune
10-13-2007 5:56 AM


Re: Amalgam Facts
LindaLou writes:
Before you cite any more studies, I want to know who conducted them, what the possible conflicts of interest were, and who paid for the studies.
Questioning the motives and integrity of sources of information that disagree with you is something you do a lot. I don't know why this has to be repeatedly pointed out to you, but people are people wherever you go. The proclivity for errors and bias and shenanigans will be roughly equal on both sides of almost any issue, except that in mainstream science it is more difficult to get away with it because findings without a firm basis in reality will be found out.
In all your threads you appear to be raising the same basic point over and over again, pointing out that there may be effects that only manifest themselves over periods of time longer than the studies, or that affect such a small percentage of the population that studies of practical size cannot detect it, or that the effects lurk just outside the boundaries of detectability by current means. I think we can all grant that these are possibilities, but they are as much possibilities for aspirin and sudafed as they are for mercury amalgam.
Any effect that all these studies cannot detect must be a very small effect. The argument that there is nonetheless a real effect cannot be automatically dismissed, but the degree of alarm raised is far greater than the apparent risk could possibly justify. The mental effort you put into worry and concern about things at best on the margins of detectability would be much better spent on health problems with such comparatively huge effects that we know without doubt they are real, such as cigarette smoking or alcohol consumption or diets high in fat and so forth.
--Percy

This message is a reply to:
 Message 2 by Kitsune, posted 10-13-2007 5:56 AM Kitsune has replied

Replies to this message:
 Message 4 by Kitsune, posted 10-13-2007 9:38 AM Percy has replied
 Message 11 by Buzsaw, posted 10-13-2007 4:23 PM Percy has not replied

  
Kitsune
Member (Idle past 4327 days)
Posts: 788
From: Leicester, UK
Joined: 09-16-2007


Message 4 of 32 (427875)
10-13-2007 9:38 AM
Reply to: Message 3 by Percy
10-13-2007 8:29 AM


Re: Amalgam Facts
The mental effort you put into worry and concern about things at best on the margins of detectability would be much better spent on health problems with such comparatively huge effects that we know without doubt they are real, such as cigarette smoking or alcohol consumption or diets high in fat and so forth.
No reason to worry then? Have you had a look at the evidence here about amalgams? They could be having an acute effect on some people's health, and a low-level effect on many peoples' health. You will not be surprised to find out that I talk on a forum for people who think they've had ill health due to amalgams. No doubt a number of them are in the wrong place. However a number of them also claim to be feeling significantly better since amalgam removal. Again, these are very ill people who went through the conventional system and were failed. People often turn to amalgam removal as a "last resort" when nothing else helps.
Why should I sit here worrying about cigarette smoking or alcohol? The dangers of these things are well known. If a person chooses to use alcohol or tobacco then they usually understand the risks involved. My husband smokes, has tried to quit dozens of times, and I support him as best I can.
My diet is fairly high in fat. What's critical is the kind of fat. Many saturated fats are actually good for you. Most vegetable fats which are touted as heart-healthy are anything but. I do pass this information on to people who are interested.
I think it's quite likely that amalgam fillings will be phased out in my lifetime. The AMA, the FDA etc. would probably prefer to do it quietly so as not to stir up health panics and court cases with damages in the trillions of dollars. I care because I've seen people being harmed, and the authorities do not acknowledge that harm. You know what you're doing if you inhale on a cigarette. Do you know what you are doing when you let a dentist put mercury in your mouth?

This message is a reply to:
 Message 3 by Percy, posted 10-13-2007 8:29 AM Percy has replied

Replies to this message:
 Message 6 by Percy, posted 10-13-2007 10:17 AM Kitsune has replied

  
macaroniandcheese 
Suspended Member (Idle past 3954 days)
Posts: 4258
Joined: 05-24-2004


Message 5 of 32 (427879)
10-13-2007 10:14 AM
Reply to: Message 1 by molbiogirl
10-13-2007 4:36 AM


* people exposed to mercury on a sustained basis are at risk to lowered fertility
needs more fish plz. must kill ovaries.

This message is a reply to:
 Message 1 by molbiogirl, posted 10-13-2007 4:36 AM molbiogirl has not replied

  
Percy
Member
Posts: 22493
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


Message 6 of 32 (427880)
10-13-2007 10:17 AM
Reply to: Message 4 by Kitsune
10-13-2007 9:38 AM


Re: Amalgam Facts
Hi LindaLou,
You're again just using a message as an opportunity to repeat your position, which we're all already very familiar with.
The point I made was that you keep making the same arguments. In your first message that I replied to, you argued that there may be effects that only manifest themselves over periods of time longer than the studies, or that affect such a small percentage of the population that studies of practical size cannot detect it, or that the effects lurk just outside the boundaries of detectability by current means.
The response to this argument is always the same: things that are of so little danger we can't even construct studies to detect them in any reliable way are not much to worry about. In order to be so difficult to detect, the harm must be either non-existent or very tiny, or the percentage of the population which is vulnerable must be either zero or very tiny. You could probably conduct the same studies on chocolate and find larger effects.
Your latest message contains the other form of your argument, anecdotal data. Evidence from groups of self-selected self-analyzed people are useless. The plural of anecdote is anecdotes, not scientific evidence. If you don't accept that anecdotal arguments are worthless when compared to scientific data then that is the issue you must engage. Continuing to offer anecdotal data just convinces people you don't know what you're doing.
--Percy

This message is a reply to:
 Message 4 by Kitsune, posted 10-13-2007 9:38 AM Kitsune has replied

Replies to this message:
 Message 7 by Kitsune, posted 10-13-2007 12:27 PM Percy has replied

  
Kitsune
Member (Idle past 4327 days)
Posts: 788
From: Leicester, UK
Joined: 09-16-2007


Message 7 of 32 (427892)
10-13-2007 12:27 PM
Reply to: Message 6 by Percy
10-13-2007 10:17 AM


Re: Amalgam Facts
Studies can be biased and flawed. That's why we have studies like the ones MBG quoted, which presumably say that amalgam is harmless. The EPA doesn't think so, they tell dentists to dispose of it as toxic waste.
We do have the means here and now to do proper tests. They aren't going to be done by the ADA are they? Some have been done by others. Did you by any chance watch the Smoking Tooth vid?
Like I said in the vaccine thread, it's clear I've got a very different angle on what I see as truth. We're not going to agree on this and more arguing is a waste of my time and energy. If you can find someone else to take up my position you can carry on, otherwise you're welcome to discuss amongst yourselves.

This message is a reply to:
 Message 6 by Percy, posted 10-13-2007 10:17 AM Percy has replied

Replies to this message:
 Message 10 by Percy, posted 10-13-2007 2:58 PM Kitsune has not replied
 Message 16 by nator, posted 10-13-2007 7:59 PM Kitsune has not replied

  
Jon
Inactive Member


Message 8 of 32 (427896)
10-13-2007 1:29 PM


mercury free's the way to be!
I personally restrict what materials I put into my mouth for fillings because I'm quite convinced that some fillings can release mercury, 'specially the 'silver' fillings. The only person I have for this information is my mother, though, who refused silver fillings when I was a child.
I'm not going to take sides, however, but will look into getting more information.

  
molbiogirl
Member (Idle past 2668 days)
Posts: 1909
From: MO
Joined: 06-06-2007


Message 9 of 32 (427904)
10-13-2007 2:21 PM
Reply to: Message 2 by Kitsune
10-13-2007 5:56 AM


Re: Amalgam Facts
Mercury exposure can occur in the dentist's office, as an occupational health hazard.
This is irrelevant. And it is off topic. Please open an workplace mercury thread if you feel the need to discuss this further.
There have been no large-scale long-term epidemiological studies performed.
This is untrue. I suggest you take a look at the cites in the first post.
Many of the JADA papers are available to the public free of charge.
So one, mercury is absorbed from amalgam fillings. Two, there are many "unknowns" about this. Why isn't someone trying to find out then?
Have you read beyond the introduction of the CDC pdf you are citing?
There are many, many papers cited that show no effect from amalgam fillings.
Dentists and dental staff, house painters, chemists involved in disposal or recycling of mercury-contaminated wastes are also at risk of exposure ... Various studies cited by this article have shown that dentists have been exposed to significant concentrations of mercury vapor, and that these amounts appear to have been reduced in recent years due to better mercury hygiene and the reduced use of amalgam restorations.
Here is a well-cited article about the exposure of dentists to mercury worldwide, some of their symptoms, and the contribution to the environment from human waste containing mercury from amalgams. It is a sobering read.
Again. This is irrelevant. Please take your workplace exposure concerns to another thread.
Hypothetical case. A 5-year-old boy. His mother had 10 amalgam fillings present in her mouth while she was pregnant, and during pregnancy she chewed gum and drank coffee, which would have increased her exposure to the mercury from her amalgams. The mercury was passed on in utero and in her breast milk. This boy now has a few amalgam fillings of his own, eats fish or shellfish weekly, and has had a flu jab (which contains thimerosol). What do you think this boy's overall body burden of mercury is? Would you logically expect him to be well?
Hypotheticals have no place here. I would ask that you support your arguments with evidence, not fantasy.
As we've seen here, even the CDC concedes that exposure to amalgams and amalgam vapor by dentists and dental patients can pose a risk.
You've quote-mined the CDC document.
I, on the other hand, took the time to read the document. I looked at the relevant data on amalgams.
The CDC doesn't "concede" there is a danger.
Since you've chosen to ignore the 333 page CDC pdf, here's a much easier snippet from the CDC.
CDC - Page Not Found
Dental amalgam, in widespread use for over 150 years, is one of the oldest materials used in oral health care ... At present, there is scant evidence that the health of the vast majority of people with amalgam is compromised, nor that removing amalgam fillings has a beneficial effect on health.
Given the limitations of existing scientific data, a research program should be designed and implemented to fill as many gaps as possible in current knowledge about the potential long-term biological effects of dental amalgam and alternative restorative materials. The PHS should be a leader in this effort.
This was written in 2001. Since then there have been over 400 studies done.
To exert greater control over dental amalgam use, the FDA should regulate elemental mercury and dental alloy as a single product. To help dentists identify patients who may exhibit allergic hypersensitivity to all restorative materials, including dental amalgam, FDA should require manufacturers to disclose the ingredients of these materials in product labeling.
Just this past April, a federal appeals court dismissed a suit seeking FDA restrictions on amalgams.
http://www.ada.org/...ources/pubs/adanews/adanewsarticle.asp
The government in oral arguments said the FDA "has proceeded appropriately" to regulate encapsulated amalgam alloy and dental mercury (EAADM), which are currently regulated separately by the FDA and typically used by dentists in one capsule combining the components to create the material used to fill cavities.
One final quote from the CDC:
The U.S. Public Health Service believes it is inappropriate at this time to recommend any restrictions on the use of dental amalgam, for several reasons. First, current scientific evidence does not show that exposure to mercury from amalgam restorations poses a serious health risk in humans, except for an exceedingly small number of allergic reactions. Second, there is insufficient evidence to assure the public that components of alternative restorative materials have fewer potential health effects than dental amalgam including allergic-type reactions. Third, there are significant efforts underway in the U.S. to reduce the amount of mercury in the environment. And finally, as stated previously, amalgam use is declining due to a lessening of the incidence of dental caries and the increasing use of alternative materials.

This message is a reply to:
 Message 2 by Kitsune, posted 10-13-2007 5:56 AM Kitsune has not replied

  
Percy
Member
Posts: 22493
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


Message 10 of 32 (427911)
10-13-2007 2:58 PM
Reply to: Message 7 by Kitsune
10-13-2007 12:27 PM


Re: Amalgam Facts
LindaLou, you are again taking my message as an opportunity to just reassert your position and are avoiding addressing what I actually say. The conversation cannot help but be repetitious if you ignore what other people are saying.
Biases and flaws exist everywhere, and far more in your anecdotal accounts than in the scientific studies of mainstream medicine. Career and monetary motivations exist as much in alternative medicine as anywhere else, and alternative medicine is for the most part not under FDA regulation, and not particularly inclined to follow scientific methods.
We do have the means here and now to do proper tests.
They've been done. Yet again you demonstrate that your criteria for accepting studies depends whether their findings agree with you rather than the degree to which they follow accepted scientific protocols.
Let me say this again. You're accepting and rejecting studies based upon whether they agree with what you already believe, and not upon the quality of the study. This is a sure way to become entrenched in your beliefs.
And let me also say once again that your approach is the hallmark of quackery, which is almost always accompanied by questioning honesty and motives and cherry picking data rather than by anything scientific. It's a perfect formula for arriving at wrong conclusions.
They aren't going to be done by the ADA are they?
Yet another charge that the ADA is dishonest, eh, LindaLou? Don't agree with someone, attack their integrity! What a wonderful person you are!
Like I said in the vaccine thread, it's clear I've got a very different angle on what I see as truth.
What you've got is a surefire way of being wrong.
We're not going to agree on this and more arguing is a waste of my time and energy.
We're certainly not going to agree on anything that you refuse to talk about it. The key issue is that you keep offering up ad hominem and anecdote in place of scientific evidence and then for some reason resent it when you're not complemented on your approach.
If you can find someone else to take up my position you can carry on, otherwise you're welcome to discuss amongst yourselves.
There was another person like you here not so long ago who blamed everyone and everything else for the rejection of her ideas, and every so often she would just pick up her marbles and run off. By my count this is at least the 3rd time you've announced you're done in a thread, but in the past, just like Faith, you're back again in a short while. Why don't you just skip the melodramatics and stick to the issues. You can start by actually addressing the rebuttals and just skip the repetition of your assertions.
--Percy

This message is a reply to:
 Message 7 by Kitsune, posted 10-13-2007 12:27 PM Kitsune has not replied

  
Buzsaw
Inactive Member


Message 11 of 32 (427927)
10-13-2007 4:23 PM
Reply to: Message 3 by Percy
10-13-2007 8:29 AM


Not Equal On Both Sides. Here's Why
Percy writes:
Questioning the motives and integrity of sources of information that disagree with you is something you do a lot. I don't know why this has to be repeatedly pointed out to you, but people are people wherever you go. The proclivity for errors and bias and shenanigans will be roughly equal on both sides of almost any issue, except that in mainstream science it is more difficult to get away with it because findings without a firm basis in reality will be found out.
It appears that we need to go back to the message 3 which you cited and determine if you have adequately addressed the unequality issue.
LindaLou, Purple and I have all three cited how science has not supported some medical practices which are allowed. We have shown that bias because of profit motive has favored toxic drug with side effects which vary all the way from organ malfunction to high incidence of death whereas with herbal and other naturopath treatments if the same side effects were found bans would be imposed, even if the severity and incidence of those side effects were much lower.
Mobiogirl made a big deal out of one 20 year old death incidence on a product or practice related to naturopath (abe: in another thread), if I recall correctly whereas I responded that scores of thousands of deaths due to prescription drugs are tolerated by mainstream science healthcare methodology.
How can you be so critical of LindaLou when in fact you and your side of the debate chooses to ignore evidences such as the above. Do we need to go back over the whole thread and rehash all of this?
(ABE: Some of my above comment was mistakenly applied to another thread but perhaps the points made will serve to apply to this thread as well.)
Edited by Buzsaw, : Clarification

BUZSAW B 4 U 2 C Y BUZ SAW.
The immeasurable present is forever consuming the eternal future and extending the infinite past.

This message is a reply to:
 Message 3 by Percy, posted 10-13-2007 8:29 AM Percy has not replied

Replies to this message:
 Message 12 by molbiogirl, posted 10-13-2007 4:37 PM Buzsaw has replied

  
molbiogirl
Member (Idle past 2668 days)
Posts: 1909
From: MO
Joined: 06-06-2007


Message 12 of 32 (427929)
10-13-2007 4:37 PM
Reply to: Message 11 by Buzsaw
10-13-2007 4:23 PM


Re: Not Equal On Both Sides. Here's Why
Buz, as an admin, you should know that dragging a thread off topic is verboten.
I would ask that you take your "Prescription Drugs Are Deadly" concerns and your "BigPharma is Evil" concerns to a new thread.
btw.
Mobiogirl made a big deal out of one 20 year old death incidence on a product or practice related to naturopath, if I recall correctly.
You do not, sir.
I suggest before casting aspersions you do me the courtesy of referencing the original post and get your story straight.
Edited by molbiogirl, : No reason given.

This message is a reply to:
 Message 11 by Buzsaw, posted 10-13-2007 4:23 PM Buzsaw has replied

Replies to this message:
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Buzsaw
Inactive Member


Message 13 of 32 (427932)
10-13-2007 4:46 PM
Reply to: Message 12 by molbiogirl
10-13-2007 4:37 PM


Re: Not Equal On Both Sides. Here's Why
My apologies, Mobiogirl. I see what happened. Percy cited a message 3 and I assumed it was from the holistic thread. Thinking I was posting my response to Percy in the same thread which he linked I went ahead and submitted the message. Perhaps I should move the message to the proper thread.

This message is a reply to:
 Message 12 by molbiogirl, posted 10-13-2007 4:37 PM molbiogirl has not replied

  
johnfolton 
Suspended Member (Idle past 5618 days)
Posts: 2024
Joined: 12-04-2005


Message 14 of 32 (427937)
10-13-2007 5:02 PM


Interesting link that explains due to mercury bonds themselves are weak mercury molecule to mercury molecule which is why it vaporizes so quickly. Its questions that the mecurry to metal bonds too are weak which is why they are continuously naturally broken.
This is why after only 26 days sheep and monkeys studies using radioactive mercury from the fillings was said identical in sheep and monkey tissue analysis as revealed by whole body image scan and tissue analysis. link source given: FASEB J. 3:2641-2646; 1989
Its interesting that some of the studies run by the ADA never tested feces but tested the urine and blood which is known to be low in mercury. Such bias by those we entrust with the health of our children, etc...
---------------------------------------------
amalgam is a mixture of metals that are not in an ionic state, and hence do not form an ionic bond, but instead form weak, uncharged metallic bonds. This is a problem because, by itself, metallic mercury has a very low evaporation temperature and readily turns into a vapor. Here's an interesting fact I learned recently: ever wonder why mercury is the only metal that is a liquid at room temperature? Because it has relatively weak bonds with itself (i.e., mercury molecule-to-mercury molecule), which is also why it vaporizes so readily. This process is not stopped by the weak bonds that mercury makes with the other metals in amalgam, which are continuously, naturally broken. And, consider that approximately 80% of inhaled mercury is absorbed through the lungs by humans. Additional mercury from the breakdown of amalgam is also dissolved in saliva and swallowed, some of which is absorbed.
In response to critics' claims that the sheep amalgam results were not applicable to humans because sheep chew more frequently, a similar study was undertaken on monkeys, which have chewing patterns more similar to humans. The results were pretty much identical to the sheep studies.
MercuryLife: Introduction
Despite the fact that mercury is excreted primary through the bilary (liver) system into the feces, the authors did not report any measures of mercury in the children’s feces.
Evidence Based Dentistry: Critique Childrens Mercury Exposure Studies
Edited by reversespin, : No reason given.

Replies to this message:
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molbiogirl
Member (Idle past 2668 days)
Posts: 1909
From: MO
Joined: 06-06-2007


Message 15 of 32 (427952)
10-13-2007 7:49 PM
Reply to: Message 14 by johnfolton
10-13-2007 5:02 PM


Mercury and its molecular bonds
This is why after only 26 days sheep and monkeys studies using radioactive mercury from the fillings was said identical in sheep and monkey tissue analysis as revealed by whole body image scan and tissue analysis. link source given: FASEB J. 3:2641-2646; 1989
Here is the direct link to the pdf:
Just a moment...
In response to critics' claims that the sheep amalgam results were not applicable to humans because sheep chew more frequently, a similar study was undertaken on monkeys, which have chewing patterns more similar to humans.
There are a lot of problems with the methodology, not just "sheep chewing".
quackwatch writes:
* The Canadian researchers prepared their amalgam with a method that has been obsolete for more than 40 years. The resultant amalgam contained excess mercury and was softer and therefore more easily worn by chewing, especially in a cud-chewing animal such as a sheep.
* The amalgams were placed in opposing teeth, so they would grind against each other. This enhanced the already enhanced rate of release of materials.
* Because rubber dams were not used when the fillings were placed, scrap amalgam was free to enter the sheeps' mouth and be swallowed.
* The methods used to detect and calculate the amount of mercury absorbed were not valid.
* Although the researchers claimed that body mercury levels rose during the experiment, they had not measured the levels that were present in the beginning. The data actually showed that the animals swallowed a lot of free mercury during the placement of the fillings.
* Their claim of kidney toxicity was based on urinary findings that show just the opposite of what is known to occur in mercury poisoning in humans.
The follow up "monkey study" is not available at the FASEB site.
Here is the abstract, which is available:
Whole-body imaging of the distribution of mercury released from dental fillings into monkey tissues
LJ Hahn, R Kloiber, RW Leininger, MJ Vimy and FL Lorscheider
Department of Radiology, University of Calgary, Faculty of Medicine, Alberta, Canada.
The fate of mercury (Hg) released from dental "silver" amalgam tooth fillings into human mouth air is uncertain. A previous report about sheep revealed uptake routes and distribution of amalgam Hg among body tissues. The present investigation demonstrates the bodily distribution of amalgam Hg in a monkey whose dentition, diet, feeding regimen, and chewing pattern closely resemble those of humans. When amalgam fillings, which normally contain 50% Hg, are made with a tracer of radioactive 203Hg and then placed into monkey teeth, the isotope appears in high concentration in various organs and tissues within 4 wk. Whole-body images of the monkey revealed that the highest levels of Hg were located in the kidney, gastrointestinal tract, and jaw. The dental profession's advocacy of silver amalgam as a stable tooth restorative material is not supported by these findings.
Given the unforgivable flaws in the previous "study", I would need to examine this paper first hand before I took any of its conclusions seriously.
amalgam is a mixture of metals that are not in an ionic state, and hence do not form an ionic bond, but instead form weak, uncharged metallic bonds.
Metallic bonds are not weak.
Because it has relatively weak bonds with itself (i.e., mercury molecule-to-mercury molecule), which is also why it vaporizes so readily. This process is not stopped by the weak bonds that mercury makes with the other metals in amalgam, which are continuously, naturally broken.
wiki writes:
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.
Mercury bonds are not "continuously broken". Broken bonds = mercury vapor.
Mercury vapor can be very accurately measured.
Determination of the rate of release of intra-oral mercury vapor from amalgam
Journal of Dental Research, Vol 67, 1235-1242, 1988
The results of the Mercollector-Mercometer measurements carried out on seven subjects with nine or more occlusal surfaces restored with dental amalgam and on three subjects without any amalgam restorations revealed that the rate of mercury release was in the range 0.03-0.34 ng/sec in the former group and less than 0.01 ng/sec in the latter.
PLEASE NOTE: The folks with no amalgam fillings had measurable mercury vapor in their mouths.
Very sensitive instruments can detect billionths of a gram of mercury vapor in the mouth of a person with amalgam fillings. However, the minuscule amount of mercury the body absorbs from amalgams is far below the level that exerts any adverse health effect [1-6]. One study found that people with symptoms they related to amalgam fillings did not have significant mercury levels. The study compared ten symptomatic patients and eight patients with no reported health complaints. The symptom group had neither a higher estimated daily uptake of inhaled mercury vapor, nor a higher mercury concentration in blood and urine than in the control group. The amounts of mercury detected by the tests were trivial [6]. Some studies have shown that the problems patients attribute to amalgam restorations are psychosomatic in nature and have been exacerbated greatly by information from the media or from a dentist [7-11]
quackwatch writes:
Although mercury by itself is classified as a toxic material, the mercury in amalgam is chemically bound to other metals to make it stable and therefore safe for use in dental applications. In fact, amalgam is the most thoroughly studied and tested restorative material now used. Compared to the rest, it is durable, easy to use, and inexpensive. The safety and effectiveness of amalgam have been reviewed by major U.S. and international scientific and health bodies, including the American Dental Association; the National Institutes of Health; the U.S. Public Health Service; the Centers for Disease Control and Prevention; the Food and Drug Administration; and the World Health Organization. All have concluded that amalgam is a safe and effective material for restoring teeth.
Most people with fillings have less than 5 micrograms per liter of urine. Nearly all practicing dentists have levels below 10 micrograms per liter, even though they are exposed to mercury vapor when placing or removing amalgam filings and typically have amalgams in their own teeth. Thus, even with that exposure, the maximum levels found in dentists are only slightly higher than those of their patients and are far below the levels known to affect health, even in a minor way [7-12].
The mercury found in urine is from all exposures: air, food, water, fillings.
Two tunafish sandwiches in one day = more mercury in your system than a month's exposure from a mouthful of amalgam fillings.
ada.org writes:
Issued in late 1997, the FDI World Dental Federation and the World Health Organization consensus statement on dental amalgam, stated, "No controlled studies have been published demonstrating systemic adverse effects from amalgam restorations." The document also states that, aside from rare instances of local side effects of allergic reactions, "the small amount of mercury released from amalgam restorations, especially during placement and removal, has not been shown to cause any . adverse health effects."
The ADA’s Council on Scientific Affairs 1998 report on its review of the recent scientific literature on amalgam states: "The Council concludes that, based on available scientific information, amalgam continues to be a safe and effective restorative material." The Council’s report also states, "There currently appears to be no justification for discontinuing the use of dental amalgam."
In an article published in the February 1999 issue of the Journal of the American Dental Association, researchers report finding "no significant association of Alzheimer’s Disease with the number, surface area or history of having dental amalgam restorations" and "no statistically significant differences in brain mercury levels between subjects with Alzheimer’s Disease and control subjects."
In 2002, the U.S.Food and Drug Administration (FDA) and other organizations of the U.S. Public Health Service (USPHS) that continue to investigate the safety of dental amalgams released a consumer update stating that there is “no valid scientific evidence has shown that amalgams cause harm to patients with dental restorations, except in the rare case of allergy.”
A 2003 paper published in the New England Journal of Medicine states, “Patients who have questions about the potential relation between mercury and degenerative diseases can be assured that the available evidence shows no connection.”
In 2006, the Journal of the American Medical Association (JAMA) and Environmental Health Perspectives published the results of two independent clinical trials designed to examine the effects of mercury release from amalgam on the central and peripheral nervous systems and kidney function. The authors concluded that “there were no statistically significant differences in adverse neuropsychological or renal effects observed over the 5-year period in children whose caries are restored using dental amalgam or composite materials”;vi,vii and “children who received dental restorative treatment with amalgam did not, on average, have statistically significant differences in neurobehavioral assessments or in nerve conduction velocity when compared with children who received resin composite materials without amalgam. These finding, combined with the trend of higher treatment need later among those receiving composite, suggest that amalgam should remain a viable dental restorative option for children.”viii
http://www.ada.org/...urces/positions/statements/amalgam.asp
cda.org writes:
Alzheimer’ Association
“According to the best available scientific evidence, there is no relationship between silver dental fillings and Alzheimer’s. . .” Alzheimer’s Association Web site
American Academy of Pediatrics
Although dental amalgams are a source of mercury exposure and are associated with slightly higher urinary mercury excretion, there is no scientific evidence of any measurable clinical toxic effects other than rare hypersensitivity reactions. An expert panel for the National Institutes of Health has concluded that existing evidence indicates dental amalgams do not pose a health risk and should not be replaced merely to decrease mercury exposure.
Pediatrics, Vol. 108, No. 1, July 2001, pp. 197-205. American Academy of Pediatrics Web site
Autism Society of America
There is no known single cause for autism, but it is generally accepted that it is caused by abnormalities in brain structure or function. Brain scans show differences in the shape and structure of the brain in autistic versus non-autistic children. Researchers are investigating a number of theories, including the link between heredity, genetics, inherited genetic coding, and medical problems.
Autism Society of America Web site
Consumer Reports
"As far as we know in this well-studied area, your silver amalgam fillings are doing you no harm. If you need new fillings for your back teeth, amalgams remain the cheapest, most durable choice."
Consumer Reports on Health, “Don’t Replace Sound Dental Restorations,” Irwin Mandel, D.D.S., June 2001.
Life Sciences Research Office
In December 2004, the third comprehensive review in 12 years of the safety of dental amalgam was completed by the Life Sciences Research Office (LRSO) at the request of the federal Trans-agency Working Group on the Health Effects of Dental Amalgam. This ad hoc body was created in 1994 and is composed of representatives from the National Institutes of Dental and Craniofacial Research of the National Institutes of Health, the Center for Devices and Radiological Health of the U.S. Food and Drug Administration, the Centers for Disease Control and Prevention, and the Office of the Chief Dental Officer of the Public Health Service. The final report, titled “Review and Analysis of the Literature on the Potential Adverse Health Effects of Dental Amalgam,” concluded that there is insufficient evidence to draw a link between serious adverse health consequences and dental amalgam. This scientific body has been rendering independent scientific opinions and evaluations for nearly half a century, and this report summarized a massive evaluation of peer-reviewed amalgam literature from 1996 to 2003. It can be obtained through http://www.lsro.org.
National Multiple Sclerosis Society
There is no scientific evidence to connect the development of MS or other neurological diseases with dental fillings containing mercury.
National MS Society Web site
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And that is not an exhaustive list of the organizations that find no causal link between amalgam fillings and death/injury.

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