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Lithium-sodium-potassium codoped dental microcrystalline glass and preparation method and application thereof

A technology of glass-ceramic and sodium-potassium, applied in dental preparations, dentistry, dental prostheses, etc., to achieve the effects of easy-to-obtain raw materials, stable process, and simple raw materials

Active Publication Date: 2017-07-07
FUZHOU RUIKE BULANG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In terms of existing achievements, domestic patent application numbers CN201410271711.2, CN201510246538.5, and CN201610084411.2 mainly adopt the powder hot die-casting method, and their main performance indicators such as bending strength are still lower than those of mainstream products in the international market (360~400MPa). Not a small gap

Method used

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  • Lithium-sodium-potassium codoped dental microcrystalline glass and preparation method and application thereof
  • Lithium-sodium-potassium codoped dental microcrystalline glass and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] According to the ratio of each component in Table 1, a certain amount of analytically pure raw material (SiO 2 , Li 2 CO 3 、Na 2 CO 3 、K 2 CO 3 , NH 4 h 2 PO 4 and ZrO 2 ), use a ball mill to mix evenly for 8 hours; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, and heat it at 4°C / min to 330°C and 850°C for 1 hour each to remove nitrogen and carbon , continue to heat up to 1500°C and keep it warm for 1 hour; then, take out the crucible, pour the melt into deionized water to quench, and dry to obtain fragments of glass melt; ball mill again, and the powder is directly heated to 1500°C / 1 hour for remelting ;Cast the remelted molten glass into a mold preheated at 550°C, quickly put it into a resistance furnace, heat it at 500°C for 10 minutes, then immediately rise to 550°C and hold it for 30 minutes, then cool with the furnace. The cast glass block is first subjected to nucleation at 620°C / 1 hour an...

Embodiment 2

[0045] According to the ratio of each component in Table 1, a certain amount of analytically pure raw material (SiO 2 , Li 2 CO 3 、Na 2 CO 3 、K 2 CO 3 , NH 4 h 2 PO 4 and ZrO 2 ), use a ball mill to mix evenly for 8 hours; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, and heat it at 4°C / min to 330°C and 850°C for 1 hour each to remove nitrogen and carbon , continue to heat up to 1500°C and keep it warm for 1 hour; then, take out the crucible, pour the melt into deionized water to quench, and dry to obtain fragments of glass melt; ball mill again, and the powder is directly heated to 1500°C / 1 hour for remelting ;Cast the remelted molten glass into a mold preheated at 550°C, quickly put it into a resistance furnace, heat it at 500°C for 10 minutes, then immediately rise to 550°C and hold it for 30 minutes, then cool with the furnace. The cast glass block is first subjected to nucleation at 610°C / 1 hour an...

Embodiment 3

[0047] According to the ratio of each component in Table 1, a certain amount of analytically pure raw material (SiO 2 , Li 2 CO 3 、Na 2 CO 3 、K 2 CO 3 , NH 4 h 2 PO 4 and ZrO 2 ), use a ball mill to mix evenly for 8 hours; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, and heat it at 4°C / min to 330°C and 850°C for 1 hour each to remove nitrogen and carbon , continue to heat up to 1500°C and keep it warm for 1 hour; then, take out the crucible, pour the melt into deionized water to quench, and dry to obtain fragments of glass melt; ball mill again, and the powder is directly heated to 1500°C / 1 hour for remelting ;Cast the remelted molten glass into a mold preheated at 550°C, quickly put it into a resistance furnace, heat it at 500°C for 10 minutes, then immediately rise to 550°C and hold it for 30 minutes, then cool with the furnace. The cast glass block is first subjected to nucleation at 590°C / 1 hour, a...

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Abstract

The invention discloses lithium-sodium-potassium codoped dental microcrystalline glass and a preparation method and application thereof. The glass is prepared from, by mass, 65%-75% of SiO2, 5%-10% of Li2O, 5%-10% of Na2O, 5%-10% of K2O, 4%-6% of P2O5 and 4%-6% of ZrO2. The sum of the mass fractions of the components is 100%. A glass block is firstly obtained through a fusion pouring method, a glass intermediate R2SiO3 (R=Li, Na and K) easy to machine is obtained after devitrification treatment is carried out, then secondary thermal treatment is carried out, and the finished microcrystalline glass with R2Si2O5 (R=Li, Na and K) as a main crystalline phase is obtained. The microcrystalline glass has excellent bending strength and other mechanical properties and can be used for dental all-ceramic repair materials.

Description

technical field [0001] The invention belongs to the field of glass-ceramics, and in particular relates to a lithium-sodium-potassium co-doped dental glass-ceramics and its preparation and application. Background technique [0002] Teeth are an important part of the human body. In today's society, the problem of dental restoration is becoming more and more prominent. Choose suitable restoration materials to make higher strength and more beautiful dentures (commonly known as "dentures") to restore and decorate the teeth to restore the teeth. Biological function and beautiful appearance have become research hotspots. Dental all-ceramic restorations Silicate-based glass-ceramic materials (such as lithium disilicate Li 2 Si 2 o 5 , Li 2 O 2SiO 2 ) has a broader application prospect because of its mechanical properties and semi-permeability closer to natural teeth, easy machining and other advantages. At present, the commonly used glass-ceramic molding processes include hot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/10C03B32/02A61K6/00A61K6/027A61K6/033A61K6/838
CPCA61K6/20A61K6/30A61K6/836A61K6/838C03B32/02C03C10/0009
Inventor 张腾林城
Owner FUZHOU RUIKE BULANG MEDICAL TECH CO LTD
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