Methods for making layered dental appliances

US8813364B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

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

Key dates

• Filing date: Dec 8, 2010
• Grant date: Aug 26, 2014
• Expiry date: Dec 8, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49885
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods for making a layered dental appliance. Some methods can include providing a solid structure (e.g., a die or a dental core, such as a fully sintered ceramic dental core) having a desired outer shape, and applying a first slurry to the solid structure to form a first free form layer on the solid structure. The method can further include solidifying the first free form layer on the solid structure, and machining the solidified first free form layer to a desired shape to form a first article comprising the solid structure and a first shaped layer. The method can further include applying, solidifying, and machining a second layer in a similar way to form a second article comprising the solid structure, the first shaped layer, and a second shaped layer. In some methods, the free form layers are not exposed to a high temperature prior to being machined.