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Biological activity glass ceramics capable of cutting and its preparation method

A bioactive glass and ceramic technology, applied in the field of silicate materials, can solve the problems of difficult processing and difficult application of bioceramics, and achieve the effects of easy operation, good biocompatibility, and good bioactivity

Inactive Publication Date: 2007-11-14
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing of ceramic materials is difficult, and the shape of human bones and teeth varies greatly due to differences in individuals and specific parts. Therefore, the difficulty of processing bioceramics limits its application in bone and tooth restoration materials.

Method used

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  • Biological activity glass ceramics capable of cutting and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: by SiO 2 45.9%, Al 2 o 3 9.2%, MgO 11.8%, NaF 13.1%, CaHPO 4 12.6%, CaCO 3 5.4%, CaF 2 2.0% ingredients mixed evenly; poured into an alumina crucible, smelted in a silicon molybdenum rod furnace at 1500°C for 2 hours, the heating rate was 5°C / min, poured the molten glass into water to quench, dried and ball milled to 74μm or less; these glass powders are remelted under the same conditions and then cast into graphite molds. Before that, the molds were heated to 500-600°C, and the graphite molds were immediately moved into the heating furnace and kept at 650°C for 1 hour. Cool to obtain a glass matrix; then heat the glass matrix from room temperature to 925°C for 6 hours at a heating rate of 10°C / min, and take it out after cooling to room temperature with the furnace. The obtained glass-ceramic samples are processed and polished, and the size is 3×4×35mm. The flexural strength is 134MPa and the elastic modulus is 12GPa by three-point bending method...

Embodiment 2

[0013] Embodiment 2: by SiO 2 34.4%, Al 2 o 3 6.9%, MgO 8.9%, NaF 9.8%, CaHPO 4 25.3%, CaCO 3 10.7%, CaF 2 Mix 4.0% ingredients; pour into an alumina crucible, melt in a silicon-molybdenum rod furnace at 1500°C for 2 hours, the heating rate is 5°C / min, pour the molten glass into water to quench, dry and ball mill to 74μm or less; these glass powders are remelted under the same conditions and then cast into graphite molds. Before that, the molds were heated to 500-600°C, and the graphite molds were immediately moved into the heating furnace and kept at 650°C for 1 hour. Cool to obtain a glass matrix; then heat the glass matrix from room temperature to 925°C for 6 hours at a heating rate of 10°C / min, and take it out after cooling to room temperature with the furnace. The obtained glass-ceramic samples are processed and polished, and the size is 3×4×35mm. The flexural strength is 168MPa and the elastic modulus is 21GPa by three-point bending method on a CSS-44100 electr...

Embodiment 3

[0017] Embodiment 3: by SiO 2 45.9%, Al 2 o 3 9.2%, MgO 11.8%, NaF 13.1%, CaHPO 4 12.6%, CaCO 3 5.4%, CaF 2 2.0% ingredients mixed evenly; poured into an alumina crucible, smelted in a silicon molybdenum rod furnace at 1500°C for 2 hours, the heating rate was 5°C / min, poured the molten glass into water to quench, dried and ball milled to 74μm or less; these glass powders are remelted under the same conditions and then cast into graphite molds. Before that, the molds were heated to 500-600°C, and the graphite molds were immediately moved into the heating furnace and kept at 650°C for 1 hour. Cool to obtain a glass matrix; then heat the glass matrix from room temperature to 925°C for 6 hours at a heating rate of 10°C / min, and take it out after cooling to room temperature with the furnace. The obtained glass-ceramic samples are processed and polished, and the size is 3×4×35mm. The flexural strength is 134MPa and the elastic modulus is 12GPa by three-point bending method...

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Abstract

The invention relates to silicate material field used in repair and substitution for bone and tooth. Wherein, mixing materials with weight share in alumina ball mill tank; putting into alumina crucible, hot smelting in silicomolybdic bar furnace; pouring fused glass into water for quenching, drying and smashing; remelting the glass powder to cast in graphite mould at 500-700Deg for one hour; cooling to room temperature and obtaining even glass parent body; heating to 800-110Deg for 4-24h to separate controlled glass ceramic contained fluorine bronze mica and fluorapatite. The product has bending strength and elastic modulus fit to mechanical property of bone and teeth of human body, and can generate strong chemical bond with human bone group. This invention is simple and convenient to operate.

Description

Technical field: [0001] The invention relates to the field of silicate materials, in particular to a machinable bioactive glass ceramic and a preparation method thereof. The material is applied to the repair and replacement of bone and tooth defects. Background technique: [0002] Traditional medical biomaterials are mostly titanium alloy, stainless steel, cobalt-chromium-molybdenum alloy, polymer material PMMA, etc. Due to poor biocompatibility, these materials are easy to form fibrous cysts when implanted in the human body as bone and tooth substitute materials. It cannot form a tight chemical bond with bone tissue, and it is easy to loosen and fall off. In recent years, bioceramics, as a new type of medical biomaterial, has attracted extensive attention. However, the processing of ceramic materials is difficult, and the shape of human bones and teeth varies greatly due to differences in individuals and specific parts. Therefore, the difficulty of processing bioceramics l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/06C03C10/08C03B32/02
CPCC03C4/0007C03C10/00
Inventor 刘咏向其军单小宏盛小娴
Owner CENT SOUTH UNIV
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