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Sandblasting the frosty surface

 
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twmdds



Joined: 16 May 2006
Posts: 142

PostPosted: Wed May 21, 2014 1:48 pm    Post subject: Sandblasting the frosty surface Reply with quote

My lab etches the internals of emax, but does not silanate. That leaves a frosty coating on the internal. I have been sandblasting the frosty stuff off before Interface (10 sec dwell and dry, then Surpass 2-dry-cure). Is sandblasting appropriate/needed? Also I have had some difficulty getting 100% seating with emax crowns when I do Surpass 1-2-3-thin and cure on the prep. So currently I'm leaving out the Surpass 3, just curing the Surpass 2 and now am getting 100% seat. Any comments??? Tom
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john kanca



Joined: 14 May 2005
Posts: 6342

PostPosted: Mon May 26, 2014 6:35 am    Post subject: Re: Sandblasting the frosty surface Reply with quote

twmdds wrote:
My lab etches the internals of emax, but does not silanate. That leaves a frosty coating on the internal. I have been sandblasting the frosty stuff off before Interface (10 sec dwell and dry, then Surpass 2-dry-cure). Is sandblasting appropriate/needed? Also I have had some difficulty getting 100% seating with emax crowns when I do Surpass 1-2-3-thin and cure on the prep. So currently I'm leaving out the Surpass 3, just curing the Surpass 2 and now am getting 100% seat. Any comments??? Tom



Sandblasting will remove the white salts, but Interface can deal with them in the absence of sandblasting.

Leaving out the Surpass 3 concerns me. I can make it so thin that you cannot tell it from anything else. Have to find the image.
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vjau



Joined: 08 Jul 2009
Posts: 76

PostPosted: Wed Jul 02, 2014 7:24 am    Post subject: Re: Sandblasting the frosty surface Reply with quote

john kanca wrote:
Leaving out the Surpass 3 concerns me. I can make it so thin that you cannot tell it from anything else. Have to find the image.


I don't understand John, i thought the recommended protocol on ceramic was Interface then Sur2 and cure ??
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Ekrause



Joined: 11 May 2005
Posts: 782
Location: I'm here now.

PostPosted: Thu Jul 03, 2014 7:58 am    Post subject: Re: Sandblasting the frosty surface Reply with quote

vjau wrote:
john kanca wrote:
Leaving out the Surpass 3 concerns me. I can make it so thin that you cannot tell it from anything else. Have to find the image.


I don't understand John, i thought the recommended protocol on ceramic was Interface then Sur2 and cure ??


He's talking about the prep
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