Patent · US Active

Method for producing a blank, blank and a dental restoration

US10485640B2 · kind B2 · utility

4Cited by

6References

11Claims

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	Dec 22, 2016
Grant date	Nov 26, 2019
Priority date	—
Expiry date	Dec 22, 2036

Classification

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

Abstract

The invention relates to a method for the preparation of 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.