GoldRunner
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Milled 2 sample crowns from Noritake ML (multi-later) A shade light. They suggest this is suitable for shade A1.5-2 without any pre sinter staining. Looks like you could do A1-A2+. Will try the A dark for shades A3, A3.5, and possibly A4. They sintered well at recommended temps and times. The multilayer shading is subtle and reasonably blended for good results. A big improvement over monolithic shades or dipping techniques. C and D range shades are not are not available yet.
The results are nice, but I still like a little more shade characterization to my crowns. It does get you in the ball park more quickly (and consistently) but some violet and occlusal characterization would be nice. Maybe just using ZZ stain for characterization would be the way to go. I like my Wieland stains, but sometimes things go horribly wrong with darker shades, and it can be difficult to judge where and how much stain you have applied. Big labs will like the Noritake ML for making shaded gobs of Zirconia, but I believe we will see the development of Zirconia masters that will be able to achieve outstanding esthetics with this material and other multilayer products.
The results are nice, but I still like a little more shade characterization to my crowns. It does get you in the ball park more quickly (and consistently) but some violet and occlusal characterization would be nice. Maybe just using ZZ stain for characterization would be the way to go. I like my Wieland stains, but sometimes things go horribly wrong with darker shades, and it can be difficult to judge where and how much stain you have applied. Big labs will like the Noritake ML for making shaded gobs of Zirconia, but I believe we will see the development of Zirconia masters that will be able to achieve outstanding esthetics with this material and other multilayer products.