Device for producing dental workpieces

US8506294B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Olaf Althoff · Niedernhausen, DE
• Daniel Suttor · Erlangen, DE
• Stefan Hoescheler · Munich, DE
• Martin Beuschel · Hersbruck, DE

Key dates

• Filing date: Dec 23, 2002
• Grant date: Aug 13, 2013
• Expiry date: Dec 26, 2023

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C5/77
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a device for the automated production of dental workpieces. A blank is inserted in a substantially slab-shaped support of the device, said support being dimensioned such that the blank does not extend beyond it in any direction. The blank is linked with corresponding inner walls of a recess provided in the support only on two opposite faces while a gap is left between the other inner walls of the recess and the corresponding faces of the blank. The inventive design allows to avoid tensions and microcracks of the blank material thereby caused. The gaps further make the blank directly accessible for a lateral working by the milling tool.