Dental coloring stamp and a method of coloring

Patent metadata

Field	Value
Publication number	US-10512526-B2
Application number	US-201515533834-A
Country	US
Kind code	B2
Filing date	Dec 3, 2015
Priority date	Dec 11, 2014
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

A dental coloring stamp has a transfer pad for transferring a dental coloring solution to a precursor of a dental restoration. The transfer pad is at least partially formed of an open-celled elastic sponge and has a free transfer surface. The cross-section of the transfer pad is greater than a circular area of 10 mm in diameter so that a side of a dental restoration precursor can be stamped and thus colored. The invention helps facilitating the coloring of dental restorations.

First claim

The invention claimed is:

1. A dental coloring stamp, comprising a dental coloring solution and a transfer pad for transferring the dental coloring solution to a precursor of a dental restoration, the transfer pad being at least partially formed of an open-celled elastic sponge, the transfer pad having a thickness along a stamping dimension and a transfer surface which extends in dimensions essentially laterally to the stamping dimension, wherein the transfer pad in dimensions laterally to the stamping dimension is greater than a circular area of 10 mm in diameter, and wherein the dental coloring solution comprises a solution comprising a solvent, a coloring agent comprising metal ions selected from one or more of Fe, Cr, Ni, Tb, Er, Pr, Mn, and a fluorescing agent comprising ions of Bi.

2. The dental coloring stamp of claim 1 , wherein the transfer pad includes a stamping surface, and wherein the stamping surface has a convex dome-shape being defined by an outer cross-section with a minimum width in a plane laterally to the stamping dimension, a height along the stamping dimension between said plane and the dome apex, and a ratio between the height and the minimum width of less than 1:1, respectively.

3. The dental coloring stamp of claim 1 , further comprising a housing having a body in which the transfer pad is fixed and a cover, wherein the cover and the body are shaped and sized for sealingly mating with one another.

4. The dental coloring stamp of claim 3 , wherein the body comprises a reservoir for holding the dental coloring solution, the reservoir having an opening being closed by the transfer pad, wherein the transfer surface faces in a direction from the reservoir toward outside the opening.

5. The dental coloring stamp of claim 3 , wherein the body forms a well having a bottom wall from which a circumferential side wall protrudes, the transfer pad at a surface opposite of the transfer surface being fixed at the bottom wall of the well.

Assignees

• 3M Innovative Properties Co

Inventors

• Rolf Jacqueline C
• Herrmann Andreas
• Jahns Michael
• Zimmermann Dajana
• Schechner Gallus

Classifications

• A61C5/70

  Tooth crowns; Making thereof · CPC title

• A61C5/77

  Methods or devices for making crowns · CPC title

• A61C13/082 Primary

  Cosmetic aspects, e.g. inlays; Determination of the colour (A61C19/10 takes precedence) · CPC title