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Giovanni Bellamacina
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Hi Patrick, thanks a lot for your advices, can you kindly provide some lectures to have insight on what you just mentioned ? Thanks in advanceJust be careful using these "opaquers." The way they opaque is by introducing a material that will prevent the zirconia crystals from "bonding together, creating air gaps between them. This causes the light to bend or refract as it passes through, creating opacity.
That is the upside.
The downside is that this also damages the zirconia. If applied too heavily it can weaken and even cause thin margins to warp.
We (Ivoclar) don't have one for that reason, and suggest it not be used on any of our materials.