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Lab talk, the good, the bad, and the ugly
Zirconium
Sintering Zirconia Q&A
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<blockquote data-quote="Patrick Coon" data-source="post: 192220" data-attributes="member: 11366"><p>Yes, and No.</p><p></p><p>Each zirconia does have it's manufacturer recommended programs for sintering (usually a standard program and a speed program). And if they have different sintering furnaces, they may even have different programs based on the zirconia and the furnace technology. I ALWAYS recommend talking with your zirconia manufacturer to get their approved sintering parameters, as they know this works. As you go outside of these, things are not as predictable.</p><p></p><p>And as PearlZ says, fast sintering (75 minutes for single copings, 90 minutes for bridge frameworks) is achievable because you don't need/want these to really be translucent, you want strength and are going to FULLY layer for esthetics. But you shouldn't think about doing a fast sintering program (75 minutes/90minutes) for full contour crowns and bridges unless the manufacturer gives you the proper parameters (there are some that work, depending on the material, but they are approximately 3 hours and 4.5 hours respectively. And NEVER if using coloring liquids when fast sintering).</p><p></p><p>ALWAYS do a standard program (7.5 hours or longer, depending on the zirconia and furnace) when doing Long span bridges, All-on-4 cases, or using coloring liquids.</p></blockquote><p></p>
[QUOTE="Patrick Coon, post: 192220, member: 11366"] Yes, and No. Each zirconia does have it's manufacturer recommended programs for sintering (usually a standard program and a speed program). And if they have different sintering furnaces, they may even have different programs based on the zirconia and the furnace technology. I ALWAYS recommend talking with your zirconia manufacturer to get their approved sintering parameters, as they know this works. As you go outside of these, things are not as predictable. And as PearlZ says, fast sintering (75 minutes for single copings, 90 minutes for bridge frameworks) is achievable because you don't need/want these to really be translucent, you want strength and are going to FULLY layer for esthetics. But you shouldn't think about doing a fast sintering program (75 minutes/90minutes) for full contour crowns and bridges unless the manufacturer gives you the proper parameters (there are some that work, depending on the material, but they are approximately 3 hours and 4.5 hours respectively. And NEVER if using coloring liquids when fast sintering). ALWAYS do a standard program (7.5 hours or longer, depending on the zirconia and furnace) when doing Long span bridges, All-on-4 cases, or using coloring liquids. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
Sintering Zirconia Q&A
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