Patent Number: 6,254,468

Title: Method for the manufacture of dental tools for the treatment of surfaces

Abstract: In the method for the manufacture of dental tools for the treatment of surfaces, a rubber core serving as a carrier layer is first applied by injection molding onto the spindle of the tool, and the abrasive layer comprising the abrasive grains is subsequently applied to the carrier layer. In another method for the manufacture of dental tools for different treatments of surfaces, more particularly for coarse grinding, finishing, and polishing, rubber-elastic masses of different degrees of hardness are used for the abrasive parts of the tools according to the intended treatment, and abrasive grains of the same size are embedded in the rubber-elastic mass of these parts. In a preferred method, the two mentioned methods are combined to create dental tools which either comprise a combination of a carrier layer and of a plurality of overlying abrasive parts having different degrees of hardness and the same grain size, or which consist of a set of tools comprising respective tools composed of a carrier layer and an abrasive layer having different degrees of hardness of the embedding mass but the same grain size of the abrasive grains.

Inventors: Gozzi; Guido (Dietlikon, CH), Rupf; Heinrich (Buchs, CH), Von Weissenfluh; Beat A. (Gentilino, CH)

Assignee: Identoflex AG

International Classification: A61C 3/06 (20060101); B24D 011/00 (); B24D 015/00 (); A61C 003/02 ()

Expiration Date: 07/03/2018