Re: Composite fillings

"Joel M. Eichen, D.D.S." <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Is that from the Second Law of Thermozimmerology?

The paper by JP Dewald et al, Baylor College of Dentistry;
Journal of Dentistry 1992; 20: 121-127
"Evaluation of the interactions between amalgam, cement and gold castings"

"If you read the full paper, you will learn that even though the crown and
amalgam metals did not directly touch physically, there was corrosion in
the amalgam core even in the controls that sat dry at room temperature on
the shelf. The experimental groups washed with electrolytic solution, pH
and temperature cycled to simulate conditions of the human mouth, produced
far worse corrosion -- even though the bonding agents in all specimens were
meticulously applied to keep the metals completely seperated at all times."
(courtesy jeff clark)

Quoted message said:

On 12 Jun 2004 17:51:37 -0700, [email hidden] (Clinton C

Zimmerman) said:

"Joel M. Eichen, D.D.S." <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

My opinion is there is no problem. A nice layer of cement separates
the two. Two adjacent teeth one with a gold crown and the other one
with an amalgam are a problem with regards galvanic reaction.

Dissimilar metals ....

JOEL

thats incorrect, they can still react.