Titanium surface casting modification method for reinforcing titanium-porcelain combination strength

A technology of bonding strength and modification, applied in pharmaceutical formulations, pharmaceutical science, dentistry, etc., can solve the problems of poor adhesion of oxide films and affecting the bonding of titanium and ceramics.

Active Publication Date: 2014-08-27
BEIJING STOMATOLOGY HOSPITAL CAPITAL MEDICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that titanium has a very active chemical property and has a high affinity for oxygen. At the temperature of porcelain fusion, a loose, porous and poorly adhered oxide film is easily formed on the surface of titanium, which affects the bonding of titanium porcelain. A method of making the embedded material in the casting react with the titanium in the molten state to form a gradient mixed layer through a casting method, realize the combination of metal oxides and non-metal oxides with titanium, form an oxidation barrier for titanium ceramics, and make the reaction gradient The mixed layer forms a chemical bond with the glass phase in the porcelain powder, improving the bonding strength of titanium-porcelain

Method used

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  • Titanium surface casting modification method for reinforcing titanium-porcelain combination strength
  • Titanium surface casting modification method for reinforcing titanium-porcelain combination strength
  • Titanium surface casting modification method for reinforcing titanium-porcelain combination strength

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Take SiO 2 5g, ground and placed in a porcelain cup for later use; inject 35% hydrochloric acid and distilled water into the same beaker at a volume ratio of 1:1, mix well, and at the same time inject tetraethyl orthosilicate into another beaker, acidify with the mixed hydrochloric acid The volume ratio of water to ethyl orthosilicate is 1:10, then slowly drop the acidified water with hydrochloric acid into the ethyl orthosilicate beaker, and stir thoroughly. SiO is continuously added to the stirred mixture of tetraethyl orthosilicate and acidified water 2 Powder (SiO 2 The amount of powder is 3.9-4 times of the mass of tetraethyl orthosilicate), after adding all of them, continue to stir for 10-15 minutes to make SiO 2 Powder and mixture can be fully reconciled. Apply a suitable inner embedding material on the side of the wax-type that has been treated with affinity mist, and let it solidify naturally at room temperature. Embed the cast wax-type with the titanium pr...

Embodiment 2

[0035] Take SiO 2 powder and Al with a particle size of 2 μm 2 o 3 Add 2.5g of each powder into the ball mill jar, grind for 5 minutes until the two powders are fully mixed; pour 35% hydrochloric acid and distilled water into the same beaker at a volume ratio of 1:1, mix well, and at the same time inject aluminum acid into another beaker Calcium cement, the ratio of mixed hydrochloric acid acidified water to calcium aluminate cement is 1:1, then slowly drop hydrochloric acid acidified water into the calcium aluminate cement, and fully stir. The stirred calcium aluminate cement and acidified water mixture is continuously added with mixed SiO 2 Powder and Al 2 o 3Mix the powder and powder, after adding all the powder, continue to stir for 10-15 minutes, so that the powder and the mixture can be fully reconciled. Apply a suitable inner embedding material on the side of the wax-type that has been treated with affinity mist, and let it solidify naturally at room temperature. E...

Embodiment 3

[0039] Take SiO 2 Powder and ZrO 2 Add 2.5g of each powder into the ball mill jar and grind for 5-10 minutes until the grinding is uniform; inject 35% hydrochloric acid and distilled water into the same beaker at a volume ratio of 1:1, mix well, and inject orthosilicic acid into another beaker at the same time Ethyl ester, the volume ratio of the mixed hydrochloric acid acidified water to tetraethyl orthosilicate is 1:10, slowly drop the hydrochloric acid acidified water into the tetraethyl orthosilicate beaker, and stir well. The stirred mixture of tetraethyl orthosilicate and acidified water is continuously added with the mixed SiO 2 Powder and ZrO 2 After all the powder is added, continue to stir for 10-15 minutes to fully reconcile the powder and the mixture. Apply a suitable inner embedding material on the side of the wax-type that has been treated with affinity mist and let it dry naturally at room temperature. Embed the casting wax-type with the titanium professional...

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Abstract

The invention discloses a titanium surface casting modification method for reinforcing titanium-porcelain combination strength and belongs to the technical field of titanium-porcelain metal-porcelain. The method comprises the steps of: selecting one or a plurality of silicon dioxide, aluminum oxide, chromium oxide, low-smelting bonding porcelain powder, high-smelting bonding porcelain powder, screen color porcelain powder and dentin porcelain as basic ingredients of an internal embedding material; regulating the internal embedding material to gel substance through ethyl orthosilicate acidified by hydrochloric acid, or calcium aluminate cement and distilled water and water; wetting a casting wax pattern through amiable fog, coating the internal embedding material on the side to be fused with porcelain, and curing the internal embedding material at room temperature; embedding the internal embedding material through a titanium casting; and commonly casting the internal embedding material. The method disclosed by the invention forms an oxidization shield when the titanium porcelain is formed and the reaction gradient mixed layer and the glass phase in the porcelain powder form chemical combination to improve the titanium-porcelain combination strength.

Description

technical field [0001] The invention belongs to the technical field of titanium-ceramic metal ceramics, and relates to a preparation method of a titanium surface casting modified internal embedding material and a preparation method of a titanium-ceramic reaction intermediate mixed layer, so as to enhance the bonding strength of titanium-ceramic and popularize titanium-ceramic Application of metal porcelain in dental clinic. Background technique [0002] Metal titanium and its alloys have attracted much attention because of their light weight, good biocompatibility and biosafety, and the price is far lower than that of precious metals. They have been widely used in oral implants, fixed, removable denture restorations, and complete dentures. Base, artificial joints and internal fixed splints, etc. However, the application of oral titanium restorations, especially fixed titanium porcelain restorations, is limited to a certain extent. This is because the chemical properties of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/00B22D19/14A61K6/06A61K6/04A61K6/027A61C13/20
Inventor 张祖太韦艳华丁宁郑东翔李辉刘旭魏琪
Owner BEIJING STOMATOLOGY HOSPITAL CAPITAL MEDICAL UNIV
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