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Lab talk, the good, the bad, and the ugly
Porcelain
Refractory veneers
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<blockquote data-quote="2thm8kr" data-source="post: 187530" data-attributes="member: 1367"><p>These are the two investments I used when I did refractory veneers.</p><p><a href="http://www.gceurope.com/products/detail.php?id=78" target="_blank">http://www.gceurope.com/products/detail.php?id=78</a></p><p><a href="http://www.gceurope.com/products/detail.php?id=79" target="_blank">http://www.gceurope.com/products/detail.php?id=79</a></p><p></p><p>I preferred the cosmovest because it has a finer grain structure and I felt I got better fitting margins with it.</p><p>I have used both d.sign and GC MC for veneers, both are great.</p><p>I'm not in front of my furnace to look up my temps, but 15-20 °C over my regular firing temps for d.sign or GC if I remember correctly.</p><p></p><p>I never liked low fusing porcelain for refractory veneers. To me it seems to get over fired pretty easy and gray if you have to make a few correction firings. Lower fusing porcelains don't always fire at a temperature that completely burns out some die separators or build up liquids. Refractory models are a lot of prep work and I hated having to start again if I used the wrong separator or had some pulls to correct. They also seem to collapse at the incisal edge sometimes.<img src="/forums/styles/default/xenforo/smilies/banghead.png" class="smilie" loading="lazy" alt=":banghead:" title="banghead :banghead:" data-shortname=":banghead:" /></p></blockquote><p></p>
[QUOTE="2thm8kr, post: 187530, member: 1367"] These are the two investments I used when I did refractory veneers. [URL]http://www.gceurope.com/products/detail.php?id=78[/URL] [URL]http://www.gceurope.com/products/detail.php?id=79[/URL] I preferred the cosmovest because it has a finer grain structure and I felt I got better fitting margins with it. I have used both d.sign and GC MC for veneers, both are great. I'm not in front of my furnace to look up my temps, but 15-20 °C over my regular firing temps for d.sign or GC if I remember correctly. I never liked low fusing porcelain for refractory veneers. To me it seems to get over fired pretty easy and gray if you have to make a few correction firings. Lower fusing porcelains don't always fire at a temperature that completely burns out some die separators or build up liquids. Refractory models are a lot of prep work and I hated having to start again if I used the wrong separator or had some pulls to correct. They also seem to collapse at the incisal edge sometimes.:banghead: [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Porcelain
Refractory veneers
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