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Preparation method of tooth color imitating dental tetragonal polycrystalline zirconia ceramics

A zirconia ceramic, tetragonal technology, used in dental preparations, dentistry, dental prostheses, etc., can solve problems such as coloring, achieve excellent mechanical properties, good color stability, and expand the scope of indications.

Inactive Publication Date: 2010-10-27
SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem of internal coloring of tetragonal zirconia ceramics, and provide a method for preparing imitation tooth-colored dental tetragonal polycrystalline zirconia ceramics; using the color effects of rare earth elements and transition elements, through the blank coloring process, to establish The sintering process of imitation tooth-colored tetragonal zirconia ceramics suitable for dental clinical promotion produces high-strength tetragonal zirconia ceramics that match the color of natural teeth, providing a theoretical basis for the development of localized imitation tooth-colored dental tetragonal zirconia ceramics

Method used

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  • Preparation method of tooth color imitating dental tetragonal polycrystalline zirconia ceramics

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Embodiment 1

[0025] A method for preparing tooth-colored dental tetragonal polycrystalline zirconia ceramics, the specific steps are:

[0026] (1) The raw material is 3Y-TZP ceramic blank, with rare earth oxide as Pr 6 o 11 , CeO 2 , Er 2 o 3 and transition element oxide MnO 2 It is a coloring agent, and the specific components are shown in Table 1;

[0027] The full name of the 3Y-TZP is tetragonal polycrystalline zirconia ceramics;

[0028] (2) Coloring agent and dehydrated alcohol are added in 3Y-TZP, and ball milling is carried out, and powder: dehydrated alcohol: agate ball milling beads are added in the agate ball milling tank with a mass ratio of 1:1:1 to Wet ball milling at 200 rpm for 24 hours to mix evenly, then dry, put in a constant temperature drying oven, dehydrate and dry at 100°C for 12 hours, pass through a 180-mesh sieve for use, dry press after drying, and then carry out isostatic pressing Molding, molding under the molding pressure of 300MPa and keeping the press...

Embodiment 2

[0032] A method for preparing tooth-colored dental tetragonal polycrystalline zirconia ceramics, the specific steps are:

[0033] (1) The raw material is 3Y-TZP ceramic blank, with rare earth oxide as Pr 6 o 11 , CeO 2 , Er 2 o 3 and transition element oxide MnO 2 It is a coloring agent, and the specific components are shown in Table 1;

[0034] The full name of the 3Y-TZP is tetragonal polycrystalline zirconia ceramics;

[0035] (2) with the step (2) of embodiment 1;

[0036] (3) With the step (3) of embodiment 1.

Embodiment 3

[0038] A method for preparing tooth-colored dental tetragonal polycrystalline zirconia ceramics, the specific steps are:

[0039] (1) The raw material is 3Y-TZP ceramic blank, with rare earth oxide as Pr 6 o 11 , CeO 2 , Er 2 o 3 and transition element oxide MnO 2 It is a coloring agent, and the specific components are shown in Table 1;

[0040] The full name of the 3Y-TZP is tetragonal polycrystalline zirconia ceramics;

[0041] (2) with the step (2) of embodiment 1;

[0042] (3) With the step (3) of embodiment 1.

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Abstract

The invention relates to a preparation method of tooth color imitating dental tetragonal polycrystalline zirconia ceramics, which specifically comprises the following steps: taking a 3Y-TZP ceramic ingot as the raw material, taking rare earth oxide and transition element oxide as the colorant, adding the colorant and absolute ethyl alcohol into 3Y-TZP, ball milling, adding the 3Y-TZP, the absolute ethyl alcohol and agate ball milling beads into an agate ball milling pot by the mass ratio of 1:1:1, then drying, dry pressing and forming, isopressing and forming; and sintering at normal pressure, cutting and forming to obtain the tooth color imitating dental tetragonal polycrystalline zirconia ceramics. The preparation method of tooth color imitating dental tetragonal polycrystalline zirconia ceramics has the advantages that the chromatic values of 6 types of zirconia ceramics are within the range of natural tooth color, the color stability is good, the mechanical properties are excellent, and a constructed two-stage sintering process is beneficial to industrialized popularization, expands the adaptation disease scope thereof in dental clinical medicine and provides bases for the localization thereof.

Description

【Technical field】 [0001] The invention relates to the technical field of zirconia ceramics, in particular to a method for preparing tooth-colored dental tetragonal polycrystalline zirconia ceramics. 【Background technique】 [0002] The color of ceramic pigments is mainly determined by its microstructure, and what is related to the characteristics of the microstructure is the atomic structure of molecules, ions, etc. and their mutual influence. Its color mainly depends on the ion structure, electric price, ion radius, coordination number and mutual polarization between ions; the color is not only related to the coloring ion, but also related to the form of the carrier, such as the formation of solid solution, inclusion, spinel, etc. , can improve the color stability of the pigment; another factor that determines the color and properties of the ceramic pigment is the preparation process and use conditions. Only when the preparation process is reasonable and the use is proper ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622A61K6/027
Inventor 高燕张富强黄慧
Owner SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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