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Our lab uses Sirona's inLab MCXL for milling, and have had some issues with milling zirconia crowns. We are having problems with marginal chipping during...See more the milling process. When a prep doesn't allow much space for the margin thickness we usually bulk it out a bit, but that creates a lot of extra...
We don't use sirona, however with our system we stopped using the systems tools and when with a third party. We have eliminated chipping almost totally,...See more and the tools are now in use 3 times as long. As for the chipping it might just be the mill itself. Try your spindle is it running true?
We don't use Sirona but rather Amann Girrbaach. I occasionally get a chipped margin but it is usually due to dull burs or someone touching the machine...See more during a program. If you are using fresh burs and the machine is calibrated properly, I question the quality of the bur and the spindle.
Working with more than one lab is the norm for the vast majority of dentists who responded to LMT's 2013 Dentist’s Survey: - Only 14% work exclusively with one lab - 30% work with two labs on a consistent basis - 45% regularly work with three labs - 11% work with more than three labs
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