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Casting porcelain tooth with zirconium oxide as base crown and preparation method thereof

A technology of zirconia and coronal crown, applied in dentistry, dentures, dental prostheses, etc., can solve the problems of large influence of human factors, long production time and high strength of restorations, and achieve small influence of human factors and good overall aesthetic effect. , the effect of increasing the service life

Inactive Publication Date: 2016-03-16
AIDITE (QINHUANGDAO) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of the opacity of the metal inner crown, metal porcelain needs to cover the metal base with opaque porcelain, which affects the transparency of the restoration, making the porcelain-fused-to-metal cosmetics have obvious chalky, pale, and false appearance, and there are even more "spots" caused by the metal base in the neck of the tooth. "Black line" affects the appearance
Although the aesthetics of ceramic porcelain has been improved, due to the large influence of human factors on porcelain itself, post-processing is troublesome, resulting in long restoration production time and increased labor costs.
[0005] Zirconia dental ceramics are widely used restoration materials in recent years, and various products such as color gradients and transparency gradients have been developed, but their optical properties are different from those of natural teeth. and severe wear of the opposing teeth
In addition, finished teeth are expensive and difficult to popularize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] A method for preparing a cast porcelain tooth using zirconia as a base crown, comprising the following steps:

[0023] (1) Preparation of zirconia base crown:

[0024] Choose color porcelain block, color transparency gradient porcelain block or white porcelain block soaked in dyeing solution, use CAD, ComputerAidedDesign computer-aided design / CAM, computerAidedManufacturing computer-aided manufacturing, design zirconia inner crown, add personalized design factors, and then sinter , to prepare a zirconia base crown;

[0025] (2) Preparation of cast porcelain teeth:

[0026] Model making: CAD / CAM cutting of model wax or 3D printing of casting model resin is designed by 3D printing to obtain a model that has the same shape as the target restoration but lacks the zirconia inner crown.

[0027] Casting molding: insert the zirconia base crown into the prepared model, raise the temperature in the casting furnace to remove the model after embedding, continue to heat up to mel...

Embodiment 1

[0032] A method for preparing a cast porcelain tooth using zirconia as a base crown, comprising the following steps:

[0033] (1) Preparation of zirconia base crown:

[0034] Choose the color porcelain block, use CAD / CAM to design the zirconia inner crown, add personalized design factors, that is, use a special brush to paint the personalized internal dyeing liquid on the zirconia inner crown, showing the desired personalized effect , and then sintered at 1500°C for 1 hour to prepare a zirconia-based crown;

[0035] (2) Preparation of cast porcelain teeth:

[0036] Model making: the model wax is cut by CAD / CAM to obtain a model that has the same shape as the target restoration but lacks the zirconia inner crown;

[0037] Casting molding: Put the zirconia base crown into the prepared model, heat up to 90°C in the casting furnace to remove the model after embedding, and continue to heat up to 850°C to melt the finished cast porcelain, and then cast the melted finished cast por...

Embodiment 2

[0039] A method for preparing a cast porcelain tooth using zirconia as a base crown, comprising the following steps:

[0040] (1) Preparation of zirconia base crown:

[0041] Select the ceramic block with gradient color and transparency, design the zirconia inner crown with CAD / CAM, and then sinter at 1400°C for 3 hours to prepare the zirconia base crown;

[0042] (2) Preparation of cast porcelain teeth:

[0043] Model making: the printable casting model resin is designed by 3D printing to obtain a model that has the same shape as the target restoration but lacks the zirconia inner crown;

[0044] Casting molding: put the zirconia base crown into the prepared model, heat up to 150°C in the casting furnace to remove the model after embedding, and continue to heat up to 950°C to melt the finished cast porcelain, and then cast the melted finished cast porcelain into the cavity formed after removing the model, and after cooling, a cast porcelain tooth with a zirconia-based crown...

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PUM

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Abstract

The invention discloses a casting porcelain tooth with zirconium oxide as a base crown and a preparation method thereof. The preparation method includes the following steps that 1, the zirconium oxide base crown is prepared, wherein a color porcelain block or a color-clarity-gradually-changing porcelain block or a white porcelain block immersed with staining fluid is selected, CAD (Computer Aided Design) / CAM (Computer Aided Manufacturing) is used, a zirconium oxide inner crown is designed and sintered, and then the zirconium oxide base crown is prepared; 2, the casting porcelain tooth is prepared, wherein the zirconium oxide base crown is sleeved with a prepared model, embedded and then heated in a casting porcelain furnace for model removal, heating continues to be conducted, finished porcelain is molten and then cast into a cavity formed after the model is removed, and the casting porcelain tooth with zirconium oxide as the base crown is obtained after cooling is completed. Zirconium oxide is used as the base crown, strength is high, large bite force can be borne, and the service life is prolonged. The casting porcelain tooth is good in clarity, the strength is similar to that of a natural tooth, the overall attractiveness effect is good, cost is low, complex after-treatment is not needed, and the influences of human factors are low.

Description

technical field [0001] The invention relates to the field of preparation of dental porcelain restorations, in particular to a cast porcelain tooth with zirconia as a base crown and a preparation method thereof. Background technique [0002] At present, dental porcelain restorations mainly include cast porcelain, porcelain fused to metal, and zirconia all-ceramic. [0003] Cast porcelain teeth are made of a new castable ceramic material. Firstly, wax is used to make a model of the crown or sub-crown. After embedding, the wax is removed by raising the temperature in a special porcelain casting furnace. Then the finished porcelain block is melted and cast into the model by pressure. After cooling, the cast porcelain tooth is obtained. Due to insufficient strength, this material is prone to porcelain cracking during occlusion, has a short service life, and has a single overall color transparency, which cannot present the natural transition effect of natural teeth. [0004] Por...

Claims

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Application Information

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IPC IPC(8): A61C13/083
CPCA61C13/081A61C13/0004A61C13/0006
Inventor 吴海艳陈莹莹王丁李洪文
Owner AIDITE (QINHUANGDAO) TECH CO LTD
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