Light transmittance zirconium oxide sintered body, preparation method and application thereof

A technology of zirconia and sintered body, applied in zirconia, dental preparations, dental prosthesis, etc., can solve the problems of unsightly appearance, low permeability of zirconia, poor overall texture and jade feeling, and achieve strong denture texture and jade Good texture and low sintering temperature

Inactive Publication Date: 2017-02-15
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN 104016677A discloses a light-transmitting zirconia sintered body and its preparation method. The dental zirconia prepared by this method has low permeability, poor overall texture and jade feeling, not beautiful enough, and has certain limitations in application

Method used

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  • Light transmittance zirconium oxide sintered body, preparation method and application thereof
  • Light transmittance zirconium oxide sintered body, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0025] Example 1-5 Powder for translucent zirconia sintered body

[0026] The powder for the translucent zirconia sintered body of the present invention can be prepared according to the following method: dispersing the zirconia powder in pure water, adding an appropriate amount of dispersant and binder, mixing to form a slurry, and then spraying The powder is obtained in the form of granules, which is used to prepare a light-transmitting zirconia sintered body. (Table 1)

[0027] Table 1 Powder for light-transmitting zirconia sintered body

[0028]

[0029] The zirconia powder is prepared by hydrothermal synthesis, comprising the following steps:

[0030] S1. Mix soluble zirconium salt (zirconium nitrate) and yttrium salt (yttrium nitrate) in proportion and dissolve in water, slowly add ammonia water under stirring condition, and use ammonia water to adjust the pH of the slurry to 8-10;

[0031] S2. Transfer the above slurry to a reaction kettle, and perform hydrothermal...

Embodiment 6-10

[0035] Example 6-10 Translucent zirconia sintered body and preparation method thereof

[0036] The powder prepared in Examples 1-5 is molded into a green body by isostatic pressing (150-200MPa holding pressure for 10-50s), and the green body is degreased and biscuited at 900-1100° C. Carry out high-temperature sintering at 1400-1550° C. for 1-4 hours to obtain a light-transmitting zirconia sintered body.

[0037] The indicators of the obtained sintered body products are shown in Table 2.

[0038] Table 2 Indicators of Translucent Zirconia Sintered Products

[0039]

[0040] The translucent zirconia sintered body provided by the invention can be used in dental powders such as dental fixed restorations, such as dentures.

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Abstract

The invention provides a novel light transmittance zirconium oxide sintered body. The preparation method includes: conducting isostatic pressing on powder for a light transmittance zirconium oxide sintered body to make a green body, subjecting the green body to degreasing biscuit firing, and then performing high temperature sintering in atmospheric pressure atmosphere. The powder for light transmittance zirconium oxide sintered body is prepared by dispersing zirconium oxide powder in water, adding a proper amount of dispersant and binder, mixing the substances evenly to form a slurry, and then carrying out spray granulation. Specifically, the molar percentage of yttrium oxide in the zirconium oxide powder is 3-5%. The light transmittance zirconium oxide sintered body provided by the invention can be used for preparation of dental fixed restorations. The zirconium oxide sintered body provided by the invention has the advantages of high light transmittance and high strength, and the denture prepared from the zirconium oxide sintered body has the advantages of strong texture and good jade feel, and approximates human tooth.

Description

technical field [0001] The invention relates to the field of powder engineering, in particular to a light-transmitting zirconia sintered body and its preparation method and application. Background technique [0002] Zirconia ceramics is a new type of biopowder, which has good biocompatibility and excellent mechanical properties, and has become the focus of dental ceramics development. [0003] CN 104016677A discloses a light-transmitting zirconia sintered body and its preparation method. The dental zirconia prepared by this method has low permeability, poor overall texture and jade feeling, not beautiful enough, and has certain limitations in application . Contents of the invention [0004] The object of the present invention is to provide a novel light-transmitting zirconia sintered body and a preparation method thereof. [0005] Another object of the present invention is to provide the application of the translucent zirconia sintered body in the preparation of dental f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622A61C13/083
CPCA61C13/083C04B35/48C04B35/622C04B2235/3225C04B2235/96C04B2235/9646C04B2235/608C01G25/02C04B35/486C04B35/62695C04B2235/9653C04B2235/765C04B2235/9615C04B2235/604C04B2235/6567A61C13/0006C01P2006/12C01P2004/61C01P2002/54A61K6/17A61K6/80A61K6/818A61C13/0022C04B35/488C04B35/6261C04B35/6264C04B35/63416C04B35/63488C04B35/64C04B2235/3246C04B2235/5409C04B2235/5436
Inventor 杨爱民莫学魁宋锡滨
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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