Kit of parts and process for fast firing a porous zirconia article in combination with a surface treating agent containing a glass powder

US12059483B2 · kind B2 · utility

Assignee

• Solventum Intellectual Properties Company · US

Inventors

• Holger Hauptmann · Sindelsdorf, DE
• Martin Goetzinger · Unterschleißheim, DE
• Jacqueline C. Rolf · River Falls, US
• Sybille Schmittner · Panketal, DE

Key dates

• Filing date: Feb 21, 2019
• Grant date: Aug 13, 2024
• Expiry date: Aug 5, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/661
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to a process of producing a dental zirconia restoration, the dental zirconia restoration having an outer and an inner surface, the process comprising the step of firing a porous dental zirconia restoration and a glass until the porous dental zirconia restoration is sintered, the glass being located during the firing step on at least a portion of the outer surface of the porous dental zirconia restoration, wherein the zirconia material of the porous dental zirconia restoration and the glass are selected such that during the firing step the glass infiltrates the pores of the porous dental zirconia restoration to an extent of not more than 5 μm in depth. The invention also relates to a sintered dental zirconia restoration obtainable by such a process and a kit of parts comprising a porous dental zirconia mill blank and a surface treating agent containing a glass for use in such a process.