Patent · US Active

Method for producing a blank and dental restoration

US11090142B2 · kind B2 · utility

4Cited by

11References

11Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Lothar Volkl · Goldbach, DE
Martin Kutzner · Neuberg, DE
Heiner Horhold · Brunsbüttel, DE
Stefan Fecher · Goldbach, DE

Key dates

Filing date	Dec 22, 2016
Grant date	Aug 17, 2021
Priority date	—
Expiry date	Feb 24, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2237/64
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a method for the preparation of a blank from a ceramic material, wherein at least two layers of ceramic material of different compositions are filled into a die layer-by-layer and after filling of the layers they are then pressed and sintered, wherein after filling of a first layer this is structured on its surface in such a way that the first layer, viewed across its surface, differs in its height from region to region, and then a layer with a composition that differs from the first layer is filled as a second layer into the mold.

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