Zirconia Marginal Chipping when milling
Christopher Nelson · Oct 1, 2013 at 8:12am
Christopher Nelson
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 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.
Posted Oct 1, 2013 at 8:12amOct 01 2013, 8:12:13 am
Question
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 the milling process. When a prep doesn't allow much space for the margin thickness we usually...
Answered By
Christopher Nelson
Owner/ Director of Operations at Luna Laboratories, LLC, Smile 360 Works, LLC · Clearwater, FL
Scott Dellisola
Hi my experience with Sironas in lab system is that its a cheap system never seen a great fit never mind its milling capabilities. sell it .
Michael E. Grable
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, and the tools are now in use 3 times as long. As for the chipping it might just be the mill itself....[More] Try your spindle is it running true? Mike