Patent · US Active

Dental blank comprising a pre-sintered porous zirconia material, process of its production and dental article formed from said dental blank

US9592105B2 · kind B2 · utility

11Cited by

3References

15Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Holger Hauptmann · Sindelsdorf, DE
Sybille Schmittner · Panketal, DE
Gallus Schechner · Herrsching am Ammersee, DE
Brant U. Kolb · Afton, US
Andreas Herrmann · Steinebach, DE

Key dates

Filing date	Aug 1, 2013
Grant date	Mar 14, 2017
Priority date	—
Expiry date	Aug 1, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2457
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a dental mill blank comprising a pre-sintered porous zirconia material, the porous pre-sintered zirconia material showing a N2 adsorption of isotherm type IV according to IUPAC classification, the porous pre-sintered zirconia material having a Vickers hardness from about 25 to about 150, the dental mill blank comprising means for reversible attaching it to a machining device. The invention also relates to a process of producing a zirconia dental article comprising the steps of providing a dental mill blank comprising a porous pre-sintered zirconia material, placing the dental mill blank in a machining device, machining the porous zirconia material and to a dental article obtained by such a process.

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