Dyeing liquid for preparing zirconia false tooth ceramic blank in gradient color

Abstract

The invention discloses a dyeing liquid for preparing a zirconia false tooth ceramic blank in a gradient color. The dyeing liquid includes a solvent, a colorant, a surfactant, a permeation fortifier,an inorganic additive and an antibacterial agent, wherein the mass ratio of the solvent to the colorant to the permeation fortifier to the inorganic additive is (5-10):(2-3):1:(0.5-1), and the permeation fortifier is a mixture of an alcohol ether ester solvent, propylene glycol carbonate, acyl alaninate and hydrophobin. The coloring permeation depth of the dyeing liquid on the zirconia false toothceramic blank is greater than 5mm, the permeation time is short, and permeation on the surface of a ceramic or in the vertical direction of the ceramic is uniform; by adding the natural antibacterialagent into the dyeing liquid, the probability of inflammation of false tooth gingiva can be reduced; by adding inorganic ions into the dyeing liquid, the optical effect of the false tooth ceramic blank is obviously improved, and the transparency of the false tooth ceramic blank is enhanced.

Description

technical field [0001] The invention belongs to the technical field of denture ceramic bodies, and in particular relates to a dyeing solution for preparing gradient color zirconia denture ceramic bodies. Background technique [0002] The use of dental CAD / CAM technology to make all-ceramic restorations has opened up a new way for the automatic processing of restorations and the production of high-strength all-ceramic crowns and bridges. As the most important dental all-ceramic crown material, zirconia is mostly ivory white to ivory-colored after sintering. Although it has a certain degree of translucency, it cannot meet the clinical requirements for the color of the restoration. In order to meet the actual needs of clinical denture restoration, it is often necessary to color the all-ceramic base crown to make it lose part of its transparency, and adjust the color of zirconia itself to be consistent with the chroma, lightness and saturation of the tooth to be restored, so a...

AI Technical Summary

Problems solved by technology

In addition, when a variety of coloring ions are matched, due to the inconsistent penetration depth of different ions, there will be color differences in the direction perpendicular to the surface after the ceramics are made into porcelain. , there will be a difference in color, resulting in uneven color

At the same time, the above-mentioned prior art can adjust the color by adding different coloring substances in the staining solution, but it has no anti-reflection effect, so the texture of the dental ceramics after sintering is poor

[0005] At the same time, if the root canal treatment is not in place, the installation of dentures will also cause inflammation of the gums and increase the pain of the patient

[0006] Chinese patent CN104926370 discloses a dental ceramic staining solution, using at least one of carboxylic acids, sulfocarboxylic acids, aminocarboxylic acids and hydroxycarboxylic acids as a penetration enhancer, through amino, hydroxyl, carboxyl and sulfonic acid At least one of the base groups is tightly chelated with the coloring ions, so that the coloring rare earth metal ions or coloring transition metal ions are stably present in the dyeing solution without precipitation, and at the same time, this type of functional group can enhance its interface with the surface of the dental ceramic pore. Interaction, enhance the permeability and uniformity of organic additives in the pore structure, but the chelation of functional groups and colored ions needs to be realized under certain chemical conditions, and the chelation of functional groups and colored ions cannot reach 100%, the preparation process Complicated, increasing operational difficulty