Device for producing dental workpieces
Assignee3M Innovative Properties Company
InventorsOlaf Althoff, Daniel Suttor, Stefan Hoescheler, Martin Beuschel
Life of this patent
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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.
Claims10
A system comprising:
- a substantially cylindrical dental blank having axially opposite ends and a device for mounting the substantially cylindrical dental blank comprising:
- a support body separate from, and clampable into, a machine tool, the support body defining a recess formed with support body recess surfaces that at least partially surround the dental blank, the support body further defining support body clamping surfaces clampable into the machine tool using clamping surfaces of the machine tool,
- wherein each of the two axially opposite ends of the dental blank is adhesively bonded to the support body via a holder on the corresponding support body recess surface;
- wherein a gap is provided between the support body and the dental blank, wherein the gap is of sufficient size to allow a milling head to work on the dental blank between the support body and the dental blank.
Dependencies are inferred from the claim text.