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nzbroadbean
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Most of the ceramics I have built before have been on zirconia or lithium-disilicate cores.
Today I had a bench test for new job. In the glaze firing of a PFM I was asked to build a 2mm bubble came up in the ceramic popping off the opaque and dentine.
In the past I would have said the problem is something in the metal that is coming out because it was not degassed properly.
The people at the lab suggested that it was probably because of some crap in the ceramic. They also suggested that it could be that the ceramic furnaces need purging.
I have never seen any porosity of this type in full ceramic crowns before.
What causes porosity in PFM ceramics?
I am using Ducera Kiss for the first time what is the best way to fix this without over rounding my anatomy? (opaque then correction with one firing?)
Your kind help is appreciated.
Today I had a bench test for new job. In the glaze firing of a PFM I was asked to build a 2mm bubble came up in the ceramic popping off the opaque and dentine.
In the past I would have said the problem is something in the metal that is coming out because it was not degassed properly.
The people at the lab suggested that it was probably because of some crap in the ceramic. They also suggested that it could be that the ceramic furnaces need purging.
I have never seen any porosity of this type in full ceramic crowns before.
What causes porosity in PFM ceramics?
I am using Ducera Kiss for the first time what is the best way to fix this without over rounding my anatomy? (opaque then correction with one firing?)
Your kind help is appreciated.