Patent · US Active

Method for producing a blank, blank and a dental restoration

US11464608B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Lothar Volkl · Goldbach, DE
Martin Kutzner · Neuberg, DE
Tanja Oefner · Gelnhausen, DE
Stefan Fecher · Goldbach, DE

Key dates

Filing date	Oct 8, 2019
Grant date	Oct 11, 2022
Priority date	—
Expiry date	Apr 3, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2237/84
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.