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Lab talk, the good, the bad, and the ugly
Zirconium
Long Span Implant Retained Bridges - Problem With Breaking
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<blockquote data-quote="CAD-CAM Jedi" data-source="post: 256850" data-attributes="member: 12496"><p>This specific porcelain furnace we are using does not use a clamshell opening mechanism. I do think it might be too rapid a cooling rate or uneven cooling, I just need to figure out how I can isolate that as the problem. The issue is that there is no visible sign showing the integrity of the zirconia has decreased. They look perfect when they leave the lab, and then come back looking like the pictures. Do you have any recommendations on cooling rates for zirconia? Either in the sintering or in the glazing </p><p></p><p></p><p></p><p>Yeah, we are always using a stabilizer block. I read in a previous post that you only want to have no more than 4-5 sprues holding the bridge to the block so I will try reducing the sprues from here on out.</p></blockquote><p></p>
[QUOTE="CAD-CAM Jedi, post: 256850, member: 12496"] This specific porcelain furnace we are using does not use a clamshell opening mechanism. I do think it might be too rapid a cooling rate or uneven cooling, I just need to figure out how I can isolate that as the problem. The issue is that there is no visible sign showing the integrity of the zirconia has decreased. They look perfect when they leave the lab, and then come back looking like the pictures. Do you have any recommendations on cooling rates for zirconia? Either in the sintering or in the glazing Yeah, we are always using a stabilizer block. I read in a previous post that you only want to have no more than 4-5 sprues holding the bridge to the block so I will try reducing the sprues from here on out. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
Long Span Implant Retained Bridges - Problem With Breaking
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