CPC A61C 5/77 (2017.02) [A61C 13/0004 (2013.01); A61C 13/083 (2013.01); A61K 6/818 (2020.01)] | 12 Claims |
1. A method for making an anterior dental restoration from a fully sintered zirconia preform, comprising
obtaining an anterior dental restoration virtual design and a virtual model of a preform body, wherein the anterior dental restoration virtual design comprises and incisal edge and the preform body comprises a cylindrical shape having a stem projecting from a curved outer surface;
nesting the anterior dental restoration virtual design within the virtual model of the preform;
detecting a topmost point on the incisal edge of the anterior dental restoration virtual design and using the topmost point to define a line of separation that is either parallel to or orthogonal to the incisal edge of the anterior dental restoration virtual design;
generating machining instructions for shaping an anterior dental restoration from a fully sintered zirconia preform, said machining instructions comprising:
a first tool path located on a first side of the line of separation, and
a second tool path located on a second side of the line of separation; and
machining the fully sintered zirconia preform using the machining instructions.
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