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06-06-2008, 08:46 AM
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#1 (permalink) |
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Junior Member
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Synspar Opaque.... cracking :(
Hey everyone.. I know this question is very elementary but I guess it is just something I never learned, or have forgotten over the years.... anyway, my synspar opaque is coming out of the oven on 1st bake cracked, I do try to keep the 1st layer thin and even.... thoughts on how to remedy this? Let the copings sit longer to dry? Reduce drying time? Less water in opaque mix? More water?!!? (lol, ok, I know that one is wrong... ) I fill the cracks in on 2nd bake and they come down beautiful, if the cracks are too big, I grind them open a bit before that 2nd bake... but come on, I remember when I first started opaquing kind of "showing off" that I could do 1 layer opaques they were so perfect!! LOL!! my how times change....
 Thanks for your input!!! ~Willa
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"Only those who will risk going too far can possibly find out how far one can go." T. S. Elliot Last edited by willadean : 06-06-2008 at 08:49 AM. |
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06-06-2008, 10:24 PM
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#3 (permalink) |
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Senior Member
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Willa, I used synspar for awhile. I always had to do a very thin wash before my first layer opaque. Then I noticed that the heat rate had to be lower than normal or I would also get cracking. I'm assuming you use the paste opaque (no water needed or added). Other than that, it was a slam dunk, and welcome back to the dental world.
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06-08-2008, 09:51 AM
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#4 (permalink) |
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Junior Member
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thanks for the input... no i am not leaving sharpo corners... the cracking is anywhere on the copings... sometimes on the occlusion, sometimes on the facial or lingual.. there is no pattern to it... I am guessing that I am putting it on too thick. I am going to try the thin wash with the lowered heat rate and see what comes of it. Thank You!!!
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"Only those who will risk going too far can possibly find out how far one can go." T. S. Elliot |
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