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Lab talk, the good, the bad, and the ugly
Zirconium
Why did this zirconia fracture? Pics included
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<blockquote data-quote="JohnWilson" data-source="post: 200436" data-attributes="member: 213"><p>You guys are still doing fully layered restorations? This case there is zero need for it, full contour ling at least on the 6 ant would be a much wiser solution.</p><p></p><p>A few things I will mention,</p><p></p><p>1) there is ZERO need to sinter with ALL those bars connected and In my opinion causes more stress. I would cut all but 3 in a triangle fashion. Plush why put more stress to the frame by having to cut all of those bars post sinter</p><p></p><p>2) I never ever put a bar on a joint either</p><p></p><p>3) I try and estimate/match the mass of the pattern with the brace</p><p></p><p>I also sinter my large case horizontal and add a few drops to stabilize the pattern this creates less drag on the sintering plate.</p></blockquote><p></p>
[QUOTE="JohnWilson, post: 200436, member: 213"] You guys are still doing fully layered restorations? This case there is zero need for it, full contour ling at least on the 6 ant would be a much wiser solution. A few things I will mention, 1) there is ZERO need to sinter with ALL those bars connected and In my opinion causes more stress. I would cut all but 3 in a triangle fashion. Plush why put more stress to the frame by having to cut all of those bars post sinter 2) I never ever put a bar on a joint either 3) I try and estimate/match the mass of the pattern with the brace I also sinter my large case horizontal and add a few drops to stabilize the pattern this creates less drag on the sintering plate. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
Why did this zirconia fracture? Pics included
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