Dental ceramic coloring liquids
AssigneeJames R. Glidewell Dental Ceramics, Inc.
InventorsRobin A. Carden, Frank A. Jimenez
Life of this patent
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Abstract
A coloring liquid especially for shading pre-sintered ceramic dental restorations, utilizes a combination of metal salt, solvent and acid to achieve natural tooth coloring of standard dental shades. By adjusting the respective ingredients, different shades can be provided and color penetration can be sufficient to preserve aesthetics in the sintered restoration even when some of the ceramic material is removed.
Claims19
A coloring liquid for shading ceramic dental restorations to match natural teeth, the liquid comprising an organic solvent, an acid, and at least one metallic salt, wherein the amount of metallic salt in the liquid comprises 0.0001% by weight to 1.0% by weight of the liquid, wherein the at least one metallic salt comprises a rare earth metal, and wherein the acid comprises hydrochloric acid.
A coloring liquid for shading ceramic dental restorations to match the color of natural teeth, the liquid comprises
- metallic salts consisting of TbCl3, CrCl3 and MnSO4;
- an acid;
- an organic solvent;
- and
- water,
- wherein the amount of metallic salt in the liquid is in the range of 0.0001% by
- weight to 1.0% by weight, and wherein the acid comprises hydrochloric acid.
A coloring liquid comprising an organic solvent, an acid, and at least one metallic salt as a coloring agent, wherein the amount of metallic salt in the liquid is in the range of 0.0001% by weight to 1.0% by weight of the liquid, and wherein said acid comprises hydrochloric acid.
Dependencies are inferred from the claim text.