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US 12,484,996 B2Granted
Multi-coloured blank for dental purposes
AssigneeIvoclar Vivadent AG
InventorsJürgen Seger, Harald Bürke, Sebastian Krolikowski, Frank Rothbrust
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Abstract
The present invention relates to a blank for dental purposes which has a first and a second layer which, independently of each other, are based on glass, glass-ceramic or ceramic, wherein the first layer and the second layer differ in colour and form a boundary surface, wherein the boundary surface runs obliquely.
Claims16
Blank for dental purposes which comprises a first and a second layer which, independently of each other, are based on
- glass,
- glass-ceramic or
- ceramic;
- wherein the first layer and the second layer differ in colour and form a boundary surface, wherein the boundary surface runs obliquely;
- wherein in a first sectional plane through the blank, which runs parallel to the insertion axis of the blank, the boundary surface has an angle of 10 to 70° to the rotation axis and wherein the angle between the insertion axis and the rotation axis of the blank in the first sectional plane is from 70 to 110°;
- wherein
- (i) the boundary surface in the first sectional plane runs substantially straight and the boundary surface in the first sectional plane is at an angle of from 20 to 80° to the insertion axis, or
- (ii) the boundary surface in the first sectional plane runs arcuately and the line of best fit through the arcuate boundary surface in the first sectional plane is at an angle of from 20 to 80° to the insertion axis.
5 more elements
Dependencies are inferred from the claim text.