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Lab talk, the good, the bad, and the ugly
Zirconium
White dots on sintered Zirconia.
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<blockquote data-quote="Getoothachopper" data-source="post: 240994" data-attributes="member: 14425"><p>Did we ever get a definitive answer on what causes this ? (Iv'e read through the old posts). It's shown up this morning on a batch for the first time for me in two years. Every tooth perfectly round white (where the zirc touched the beads) and just below the surface .Two trays , beads were a week old (1mm) other tray two weeks . It's been a month + since I ran decontaminator material through the furnace. Zirc was all Katana pre shaded stml (from eight different discs) No pre colouring took place. I usually sinter at 1520 in my AmannGirbach ceramill therm II ,,,,,,this time I went to 1530 because there were a lot of units in there . ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,Should I charge the Doctors more for these because of the beautiful custom decalcification work on some of the occlusal tips ? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p></blockquote><p></p>
[QUOTE="Getoothachopper, post: 240994, member: 14425"] Did we ever get a definitive answer on what causes this ? (Iv'e read through the old posts). It's shown up this morning on a batch for the first time for me in two years. Every tooth perfectly round white (where the zirc touched the beads) and just below the surface .Two trays , beads were a week old (1mm) other tray two weeks . It's been a month + since I ran decontaminator material through the furnace. Zirc was all Katana pre shaded stml (from eight different discs) No pre colouring took place. I usually sinter at 1520 in my AmannGirbach ceramill therm II ,,,,,,this time I went to 1530 because there were a lot of units in there . ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,Should I charge the Doctors more for these because of the beautiful custom decalcification work on some of the occlusal tips ? :rolleyes: [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
White dots on sintered Zirconia.
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