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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
I need help with short margin
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<blockquote data-quote="user name" data-source="post: 148668" data-attributes="member: 1719"><p>No. It was an insufficient prep for an e.max to begin with; needs more material at the margin. It should still have pressed, but is doomed to fail in the mouth. Im guessing when the investment is poured, its lifting residual die lube or cleaner to the margins and because of surface tension, its being left there creating either a void or corrupted investment. I don't like the looks of the rest of the crown as Im seeing it either. Almost honeycombed with a faint crystal spyderwebing. Im guessing a reused ingot(?),quenched to cool? Burn out oven way too hot?</p></blockquote><p></p>
[QUOTE="user name, post: 148668, member: 1719"] No. It was an insufficient prep for an e.max to begin with; needs more material at the margin. It should still have pressed, but is doomed to fail in the mouth. Im guessing when the investment is poured, its lifting residual die lube or cleaner to the margins and because of surface tension, its being left there creating either a void or corrupted investment. I don't like the looks of the rest of the crown as Im seeing it either. Almost honeycombed with a faint crystal spyderwebing. Im guessing a reused ingot(?),quenched to cool? Burn out oven way too hot? [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
I need help with short margin
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