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Tinct adjustable stomatic bioactive divitrified glass and its prepn

A bioactive, glass-ceramic technology, applied in the field of glass ceramics, can solve the problems of unsatisfactory strength, bioactivity and mechanical processing performance, limited material aesthetics, etc., achieve good biocompatibility, high aesthetics, improve The effect of material strength

Inactive Publication Date: 2002-05-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not ideal in terms of strength, biological activity and mechanical processing properties of the material.
[0005] In 1987, Chinese patent CN1035999A reported CaO-MgO-Al 2 o 3 -SiO 2 -TiO 2 -P 2 o 5 In the -F system, a bioglass-ceramic with apatite and fluorophlogopite as the main crystal phase is obtained, which has good biocompatibility and processability, but the TiO used in it 2 It tends to make the glass-ceramic appear yellow, thus limiting the aesthetics of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] will contain 45% SiO 2 , 7%Al 2 O 3 , 5%MgO, 4%K 2 O, 8% MgF 2 , 6%P 2 O 5 , 15% CaO, 5% ZrO 2 , 5%TiO 2 The pure raw materials of chemical analysis are mixed evenly, put into an alumina crucible, melted at 1460 ℃ for 3 hours, cast the molten glass liquid into the tooth mold to form, make a blank, cool to room temperature, and then heat up to 650 ℃ for nucleation After 1 hour of crystallization at 950° C. for 3 hours, a glass-ceramic artificial tooth with an ivory white color and good gloss was obtained.

Embodiment 2

[0028] will contain 40% SiO 2 , 5%Al 2 O 3 , 10%MgO, 4%K 2 O, 10% MgF 2 , 6%P 2 O 5 , 17%CaO, 5%ZrO 2 , 3%TiO 2 The pure raw materials of chemical analysis are mixed evenly, put into an alumina crucible, melted at 1500 ℃ for 3 hours, cast the molten glass liquid into the tooth mold to form a blank, cooled to room temperature, and then heated to 600 ℃ for nucleation After 1 hour of crystallization at 850° C. for 4 hours, a glass-ceramic artificial tooth with a light ivory yellow color and good gloss was obtained.

Embodiment 3

[0030] will contain 35% SiO 2 , 12%Al 2 O 3 , 6%MgO, 4%K 2 O, 10% MgF 2 , 8%P 2 O 5 , 20% CaO, 5% ZrO 2 The pure raw materials of chemical analysis are mixed evenly, put into an alumina crucible, melted at 1520 ℃ for 3 hours, cast the molten glass liquid into the tooth mold to form, make a blank, cool to room temperature, and then heat up to 600 ℃ for nucleation After 1 hour of crystallization at 750° C. for 3 hours, a glass-ceramic artificial tooth with a deep ivory yellow color and good gloss was obtained.

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Abstract

The invention relates to an oral cavity bio-active nucleated glass with adjustable colour and its rpeparation method. Its preparation method includes the following steps: firstly, uniformly mixing raw materials according to a certain mixing ratio, melting for 3 hr. at 1400-1550 deg.C, pouring the molten glass inti mould and forming to obtain blank, cooling to room temp., heating glass blank and heat-insulating to make glass nucleate, continuously heating and heat-insulating to make glass crystallize to obtain the bio-active nucteated glass using apatite and fluorophlogopite as main crystal phase. Said nucleated glass uses TiO2 / ZrO2 as crystal nucleus agent, and contains a certain crystal phase formed from leucite and calc-silicate stone to raise its strength, and said product possesses good bio-compatibility, machinability and beautifulness.

Description

technical field [0001] The invention relates to an oral bioactive glass-ceramic with adjustable color and a preparation method thereof, belonging to glass ceramics [0002] technical field. Background technique [0003] Biomaterials are a class of materials that can repair, replace and regenerate body tissues and have special functions. With the continuous improvement of people's living standards, people have put forward higher requirements for the aesthetics of biological materials such as dental prosthetics, such as the color and gloss of the materials. [0004] 1983 German patent DE330664A reported on Na 2 O-K 2 O-CaO-MgO-Al 2 O 3 -SiO 2 -P 2 O 5 The biological glass-ceramics with apatite and fluorophlogopite as the main crystal phase are obtained in the -F system, which has good biocompatibility and processability. However, it is not ideal in terms of material strength, biological activity and machinability. [0005] In 1987, Chinese patent CN1035999A reported ...

Claims

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Application Information

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IPC IPC(8): A61C13/083C03B32/02C03C10/04C03C10/08C03C10/10
CPCC03C3/112C03C3/062
Inventor 梁开明俞冰胡安民
Owner TSINGHUA UNIV
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