| abstract |
The present disclosure provides for a dental mill blank and a method of forming the dental mill blank. The dental mill blank includes a first layer ( 102 ) of a first hard restorative material having a first translucency and a first shade, a second layer ( 104 ) of a second hard restorative material having a second translucency and a second shade, where at least one of the following is true: the first translucency is different from the second translucency, the first shade is different from the second shade. The first layer ( 102 ) and the second layer ( 104 ) form a first interface having a first curve ( 112 ) across a first plane of symmetry ( 114 ) of the dental mill blank, where the first curve ( 112 ) has a different from zero curvature; and a first straight line ( 122 ) along the entire length of a second plane ( 118 ) of the dental mill blank, the second plane ( 118 ) being orthogonal to the first plane of symmetry ( 114 ). |