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Medical composite ceramic material and preparation method thereof

A technology of composite ceramics and ceramic layers, applied in the field of medical ceramic materials, can solve the problems of unsatisfactory natural tooth color distribution characteristics, single color, etc., and achieve the effect of easy operation, simple preparation process and stable effect

Pending Publication Date: 2020-12-11
THE SECOND PEOPLES HOSPITAL OF SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the currently prepared dental zirconia ceramic restoration materials have a single color, which cannot meet the color distribution characteristics of natural teeth.

Method used

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  • Medical composite ceramic material and preparation method thereof
  • Medical composite ceramic material and preparation method thereof
  • Medical composite ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] This embodiment provides a preparation method of a medical composite ceramic material, the preparation method comprising:

[0074] (1) Prepare 6 parts of slurry with equal mass, which are respectively recorded as slurry a, slurry b, slurry c, slurry d, slurry e and slurry f, and the colors of slurry a to f are from dark to light. Each slurry includes zirconia ceramic powder, dyeing agent, photocurable resin, photoinitiator, dispersant, leveling agent and defoamer, and the quality of each component in each slurry is shown in the following table:

[0075]

[0076] Among them, the particle size of the zirconia ceramic powder is 500nm, the porosity of the zirconia ceramic powder is 25%, and the dyeing agent is Fe 2 o 3 , the photocuring resin is epoxy acrylate, the photoinitiator is 1-hydroxycyclohexyl phenyl ketone, the dispersant is polyacrylic acid derivatives, the leveling agent is polyacrylate, and the defoaming agent is polyether modified polydimethylsiloxane met...

Embodiment 2

[0083] This embodiment provides a preparation method of a medical composite ceramic material, the preparation method comprising:

[0084] (1) Prepare four slurries of equal quality, which are respectively recorded as slurry a, slurry b, slurry c and slurry d, and the colors of the slurry a~d range from dark to light. Each slurry includes zirconia ceramic powder, dyeing agent, photocurable resin, photoinitiator, dispersant, leveling agent and defoamer, and the quality of each component in each slurry is shown in the following table:

[0085]

[0086] The particle size of the zirconia ceramic powder is 20000nm, the porosity of the zirconia ceramic powder is 27%, and the dyeing agent is Pr 2 o 3 , the light-curing resin is polyurethane acrylate, the photoinitiator is benzoin dimethyl ether, the dispersant includes polycarboxylate, the leveling agent is polyacrylate, and the defoamer is polyether-modified polydimethylsiloxane;

[0087] (2) The raw materials weighed in proport...

Embodiment 3

[0093] This embodiment provides a preparation method of a medical composite ceramic material, the preparation method comprising:

[0094] (1) Prepare 4 slurries of equal mass, which are respectively recorded as slurries a, slurries b, slurries c and slurries d, and the colors of slurries a~d range from dark to light. Each slurry includes zirconia ceramic powder, dyeing agent, photocurable resin, photoinitiator, dispersant, leveling agent and defoamer, and the quality of each component in each slurry is shown in the following table:

[0095]

[0096] The particle size of zirconia ceramic powder is 30000nm, the porosity of zirconia ceramic powder is 30%, and the dyeing agent is Er 2 o 3 The photocurable resin is polyester acrylate, the photoinitiator is benzophenone, the dispersant is polyvinylpyrrolidone, the leveling agent is polyacrylate, and the defoaming agent is polyether modified polydimethylsiloxane;

[0097] (2) The raw materials weighed in proportion are ready for...

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Abstract

The invention provides a medical composite ceramic material and a preparation method thereof, the medical composite ceramic material comprises at least three ceramic layers of which the colors changein a gradient manner from deep to light from neck to a cut end, and the color gradient difference between two adjacent ceramic layers is less than or equal to 10%; the ceramic layer comprises zirconium oxide ceramic powder, a coloring agent, light-cured resin, a photoinitiator and an auxiliary agent; the total mass of the zirconium oxide ceramic powder and the coloring agent of each ceramic layeris calculated according to 100wt%, the zirconium oxide ceramic powder in the neck ceramic layer accounts for 80-90wt%, and the rest is the coloring agent; zirconium oxide ceramic powder contained in each ceramic layer from the neck to the cut end is progressively increased according to the equal gradient of 5-10 wt%. The color of the prepared ceramic material is in gradient change, the color transition is natural and is close to the color distribution characteristic of natural teeth, the preparation process is simple, the effect is stable, and the operation is easy.

Description

technical field [0001] The invention belongs to the technical field of medical ceramic materials, and relates to a medical composite ceramic material and a preparation method thereof, in particular to a medical composite ceramic material with gradient color changes and a preparation method thereof. Background technique [0002] Teeth are an organ of the human body, and long-term defects can cause great harm to the human body. After the tooth is lost, the alveolar bone will lose its normal bite and will be severely absorbed after a long time. At the same time, the upper and lower jaws lose the support of the teeth, which will cause the collapse of the face, affect the face, and make people look much older. At the same time, the loss of teeth leads to the decline of chewing function, and the food is not easy to chew. Unchewed food enters the stomach, increasing the burden on the stomach and causing digestive system diseases. If multiple teeth are missing, it will affect the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
CPCC04B35/48C04B35/622C04B2235/6562C04B2235/6567C04B2235/6026C04B2235/77C04B2235/96
Inventor 徐迹刘君英江文婷刘文兰阎德文
Owner THE SECOND PEOPLES HOSPITAL OF SHENZHEN
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