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Lab talk, the good, the bad, and the ugly
Zirconium
Zenostar MT evaluation.
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<blockquote data-quote="GoldRunner" data-source="post: 204256" data-attributes="member: 3331"><p>We have tried the Zenostar MT and A2 shade of the coloring liquids. After 10 crowns I have to say we are still working out some issues. Don't expect a super translucent crown. Ivoclar implys that the MT zirconia will correlate to eMax MT in translucency. Our material does not look like that. MT is supposed to be between HT and LT. The benefit should be enough translucency without having the value drop. This is only a problem with very translucent zirconia or HT eMax. </p><p></p><p> The MT is not as "reflective"as Zenostar T, but if you are familiar with super trans material you will probably be disappointed. We fire the MT in an Ivoclar S1 using their "new program 7." Our Zenostar T comes out beautiful, probably better than with their other program. The nice thing is that both the T and MT can be fired in the same cycle unlike some of the multi layer trans high temp material. Also the MT is nice because it is less chippy finishing than a super trans material. </p><p></p><p>The other issue is shading. Following the directions is a great place to start, but remember you are starting from an uncolored disk. This can lead to inconsistency do to crown thickness and shape. Thin crowns will require less stain and definitely no stain on the inside or they will come out dark. Only use a very small amount of the color marker in the stain liquid as it might cause a dark or muddy color. We have only tried one shade in an effort to dial it in. How about making shaded MT disks similar to the T? </p><p></p><p>So overall, MT is an interesting material and can fill a niche for bicuspids and anteriors not requiring much translucency while being less reflective than Zenostar T. It would micro layer very nicely. In all fairness I have talked to Pat about this and he thinks that the Zenostar MT is similar in translucency to emax MT (verified by testing) so maybe we can improve our results. How have other made out?</p></blockquote><p></p>
[QUOTE="GoldRunner, post: 204256, member: 3331"] We have tried the Zenostar MT and A2 shade of the coloring liquids. After 10 crowns I have to say we are still working out some issues. Don't expect a super translucent crown. Ivoclar implys that the MT zirconia will correlate to eMax MT in translucency. Our material does not look like that. MT is supposed to be between HT and LT. The benefit should be enough translucency without having the value drop. This is only a problem with very translucent zirconia or HT eMax. The MT is not as "reflective"as Zenostar T, but if you are familiar with super trans material you will probably be disappointed. We fire the MT in an Ivoclar S1 using their "new program 7." Our Zenostar T comes out beautiful, probably better than with their other program. The nice thing is that both the T and MT can be fired in the same cycle unlike some of the multi layer trans high temp material. Also the MT is nice because it is less chippy finishing than a super trans material. The other issue is shading. Following the directions is a great place to start, but remember you are starting from an uncolored disk. This can lead to inconsistency do to crown thickness and shape. Thin crowns will require less stain and definitely no stain on the inside or they will come out dark. Only use a very small amount of the color marker in the stain liquid as it might cause a dark or muddy color. We have only tried one shade in an effort to dial it in. How about making shaded MT disks similar to the T? So overall, MT is an interesting material and can fill a niche for bicuspids and anteriors not requiring much translucency while being less reflective than Zenostar T. It would micro layer very nicely. In all fairness I have talked to Pat about this and he thinks that the Zenostar MT is similar in translucency to emax MT (verified by testing) so maybe we can improve our results. How have other made out? [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
Zenostar MT evaluation.
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