Re: dental amalgam

From: Keith P Walsh (keith.p.walsh_at_btinternet.com)
Date: 06/13/04 

Date: Sun, 13 Jun 2004 12:00:48 +0000 (UTC)

On 9 Jun 2004 16:43:46 -0700, dentist_dent@yahoo.com (R.M.AL Kowafi
BDS) wrote:

>I donot think that amalgam as filling material will be toxic
>because that mercuray in bonded form not free form

Studies have been carried out which demonstrate experimentally that
mercury is indeed released from dental amalgams under certain
circumstances.

The abstract from the findings of one such study can be found at:

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=8360381

(J Dent Res. 1993 Sep;72(9):1315-9.,The effect of the electrode
potential on the release of mercury from dental amalgam.,Marek M.)

The final sentence of this abstract reads:

"The results indicate that the rate of mercury release from the gamma
1 phase of dental amalgam was not affected by potential changes due to
alloying or galvanic contacts unless the potential exceeded some
critical value."

This information could equally well have been written:

"The results indicate that the rate of mercury release from the gamma
1 phase of dental amalgam was affected by potential changes due to
alloying or galvanic contacts when the potential exceeded some
critical value."

I think that this proves that you're just another well-meaning
correspondent who doesn't really know what he is talking about.

Keith P Walsh

PS, the Marek paper indicates that there is some critical value of
electrode potential above which the rate of mercury release from the
gamma 1 phase of amalgam is affected.

Is there any member of the dental profession who knows what this
critical value is, or is this just another item in the catalogue of
the dental profession's collective ignorance?

Further enquiries regarding the electrical behavior of dental amalgams
can be found at:

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

Relevant Pages

  • Boyd Haleys Response to Article (Mercury Fillings: Theyre Not Risky )
    ... MERCURY FILLINGS: THEY'RE NOT RISKY: RESPONSE TO ARTICLE IS IN UNDERLINED ... PANEL THAT WAS CONVIENED TO EVALUATE THE TOXIC EXPOSURE TO MERCURY FROM ... DENTAL AMALGAMS, HAVE BEEN PROVEN TO BE THE MOST READILY ABSORBED FORM OF ...
    (sci.med)
  • Facts-Mercury. amalgams-Health Effects
    ... Some salient facts about mercury, dental amalgams and health effects ... Mercury from amalgam fillings is stored principally in the kidneys, ...
    (sci.med.dentistry)
  • Re: Facts-Mercury. amalgams-Health Effects
    ... Some salient facts about mercury, dental amalgams and health effects ... Mercury from amalgam fillings is stored principally in the kidneys, ...
    (sci.med.dentistry)
  • Re: Who owns an extracted crown?
    ... restorations on blood mercury levels. ... Derand T. Mercury vapor from dental amalgams, ... Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. ...
    (sci.med.dentistry)
  • Re: Your Legacy.
    ... mercury release from amalgam fillings into the oral cavity. ... published studies examining the relationship between dental amalgams and tissue ... in certain tissues for longer periods of time, ...
    (sci.med.dentistry)
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