Patent ID: 11864962
Assignee: JAMES R. GLIDEWELL DENTAL CERAMICS, INC.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  G | IPC A  G

Claim 18:
19. A method for making a dental restoration from a preform comprising fully sintered ceramic material shaded to achieve a color of natural dentition in a final dental restoration comprising:
obtaining a 3D CAD file of a dental restoration design and a computer model of a preform, wherein the preform comprises a preform body comprising a cylindrical shape and a preform stem that projects from a curved outer surface of the preform body at a stem contact point,
nesting the dental restoration design within the computer model of the preform body by identifying a first nesting option wherein the stem contact point is at a mesio-buccal position relative to the dental restoration design, and a second nesting option wherein the stem contact point is at a disto-buccal position relative to the dental restoration design, and selecting one of the two nesting options;
generating machining instructions for shaping the dental restoration from the preform based on the selected nesting option; and
machining a sintered ceramic preform body into a final, posterior dental restoration crown with a single grinding tool in less than 1 hour of machining time.