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The process of removing milled zirconia units from the disc can introduce fractures in the zirconia units.
Here are a few things to watch for:
1) Most technicians use high-speed air turbines to remove the zirconia units. This is an efficient process. However, it is important to remember that the carbide bur on the high-speed turbine is not as hard as the zirconia particles. Because of the difference in hardness, bur life is expected to be short. Therefore, replace burs on a regular basis.Read More