Posted by Larry Hoover on January 15, 2009, at 9:06:06
In reply to Re: What's the deal with silver amalgams?, posted by Abby Cunningham on January 14, 2009, at 14:23:42
> Here is the YouTube link, totally worth watching but scaring me to death: from International Academy of Oral Medicine and Toxicology:
>
> http://www.youtube.com/watch?v=o2VCen1vCMYThanks, Abby.
I have to admit, when I first viewed the video, I was skeptical. I went to the website of the folks that made it, and determined that it appears to be completely genuine. Their explanation is scientifically sound, but I'm still having trouble taking it in.
Here's the document that explains the science, and a whole lot more:
http://www.iaomt.org/articles/files/files193/The%20Case%20Against%20Amalgam.pdfThe video is of a tooth with amalgam filling, illuminated by a mercury vapour lamp. Mercury has specific wavelengths that it both emits and absorbs. Because mercury is the emitter, then the "smoke" that absorbs the light must also be composed of mercury. I can't think of any other interpretation.
One thing that does enter into consideration is that specific tooth and filling may have been specially selected for the demonstration. Amalgam restorations are not created equal.
Up until twenty? years ago, a dentist mixed his own amalgam, measuring out the mercury and the metal alloy powder. Nowadays, they come in precisely pre-measured packages. I note that the tooth used for this demonstration was from that earlier era. If there was too much mercury at the start, it would continue to emit the excess for an extended period.
Second, there is a significant effect of the dentist. I don't have the paper in front of me, but I recall a side-by-side comparison of identical materials, tooth being restored, blah blah, the only variable being dentist technique, and the mercury emissions differed by up to 10-fold across diffent dentists. One uncontrolled variable is the oral environment itself.....differing saliva composition and bacterial flora do have some influence, also.
I don't mean to take away from the message of this video. It's just that individual experience depends on so many variables, including mercury sensitivity.
Regards,
Lar
poster:Larry Hoover
thread:873639
URL: http://www.dr-bob.org/babble/20090104/msgs/874128.html