Process for producing a dental appliance

US8865033B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Gallus Schechner · Herrsching am Ammersee, DE
• Michael Jahns · Gilching, DE
• Martin Goetzinger · Unterschleißheim, DE

Key dates

• Filing date: Oct 1, 2009
• Grant date: Oct 21, 2014
• Expiry date: Jun 27, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/624
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing a dental appliance, the process comprising the steps of a) providing a mixture of a liquid, an inorganic binder precursor being able to undergo a sol/gel reaction and a glass or glass ceramic powder, b) casting the mixture into a mold, c) drying the cast mixture in the mold to obtain a machinable dental appliance, d) optionally machining the dental appliance to obtain a dental workpiece, e) optionally removing the dental appliance or dental workpiece from the mold, f) optionally sintering the dental appliance or dental workpiece and to a dental appliance obtainable by such a process.