Multi-Layer Zirconia Dental Blank that has a Gradual Change in Strength, Translucency and Chroma from One Direction to The Other After Sintering

A dental block device for producing a dental prosthesis, the dental block device comprising:

• a) a green body comprising zirconia;
• b) the green body having multiple different areas each having a different chemical composition between adjacent areas;
• and
• c) the green body subsequently having a post-sintered strength and a post-sintered color intensity/chroma with the post-sintered strength increasing in one direction across the multiple different areas and the post-sintered color intensity/chroma also increasing in the same direction across the multiple different areas.

A dental block device for producing a dental prosthesis, the dental block device comprising:

• a) a green body having multiple different areas each having a different chemical composition between adjacent areas;
• b) the different chemical composition including different amounts of yttria between the adjacent areas;
• c) the amount of yttria is increased incrementally from 4.5-6 wt % in a lower area to 6-10 wt % in an upper area;
• and
• d) the green body having a pre-sintered translucency that is substantially the same across the multiple different areas, and the green body subsequently having a post-sintered translucency and a post-sintered color intensity/chroma with an inverse relationship with the post-sintered translucency increasing in one direction across the multiple different areas and the post-sintered color intensity/chroma decreasing in the same direction across the multiple different areas.