Patent · US Active

Process for producing a blank, and a blank

US9737465B2 · kind B2 · utility

3Cited by

4References

24Claims

0Family size

Assignee

Dentsply International Inc. · US

Inventors

Stefan Fecher · Goldbach, DE
Heiner Horhold · Brunsbüttel, DE
Udo Schusser · Alzenau, DE
Markus Vollmann · Gelnhausen, DE
Martin Kutzner · Neuberg, DE

Key dates

Filing date	Apr 30, 2014
Grant date	Aug 22, 2017
Priority date	—
Expiry date	Apr 30, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C10/0027
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to a blank for producing a dental molded part such as an inlay, onlay, crown or bridge, and to a method for producing the blank. To be able to machine a dental molded part, in particular one having thin wall thicknesses, from the blank without difficulty, the blank is designed to consist of a glass ceramic having a density of between 30 and 60% of theoretical density, and of glass-ceramic powder particles with a particle size distribution d90≦80 μm, lithium silicate crystals being present in an amount of 10 to 90% by volume.

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