Re: Cooking Composites?
From: Jeffrey Krantz (drref_at_si.rr.com)
Date: 06/28/04
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Date: Mon, 28 Jun 2004 02:42:33 GMT
Use some common sense. When we cure composites we are initiating a chemical
reaction. Raising the starting point of the "chemicals" involved will make
any chemical reaction that much more efficient and quick.
On the other hand, you are warming a composite, not cooking it, so you want
to raise the temp to about 130 degrees which studies show will only raise
pulpal temps about 6 degrees [I assume it is because of the thermal
conductivity or lack of same for dentin].
I have tried it: there is a learning curve because the material will flow
differently.
"StovePipe" <ADay@the.Races> wrote in message
news:1gg0k4u.g8xbwnxid6czN%ADay@the.Races...
> Howdy all.
>
> As you may or may not know, there's an election here in Kanada on
> Monday. We get to choose among a monkey, a donkey, a mole and an
> ostritch. I just heard the Marijuana Party platform on the CBC as free
> time political announcement. Yes, there really is a Marijuana Party here
> in igloo land.
>
> That got me thinking (don't ask me why...) about the advert I saw in
> Dentsitry Today for a kind of heater for composites: You load your gun
> with a compule and stick it in this hole in the appliance and it gets
> heated to 130 deg Faranheit. The claim is that the adaptation and
> workability are better, and it shortens the curing time.
>
> When I saw Jeff Brucia at the ODQ symposium in May, he didn't mention
> this at all. When I saw Karl Leinfelter a couple of years ago, however,
> he did say that the layer of flowable composite could be replaced by
> heated composite. So, I'd like to know:
>
> Has anyone tried this? Is there any advantage to placing heated
> composites vs cold? Most importantly, does it alter the physical
> properties significantly?
> 10-Q for your thoughts.
>
> --
> Cheers/Chüss
> SP
> 'A Day...' is not a real email
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