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Antibacterial type inorganic whisker functional composite as well as preparation method and application thereof

A technology of functional composite materials and inorganic whiskers, applied in dental preparations, medical science, dentistry, etc., to achieve excellent antibacterial properties, improve the bonding force of organic-inorganic interfaces, and improve the effects of mechanical properties

Inactive Publication Date: 2013-04-17
CHANGZHOU HIGH TECH RES INST OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there have been a large number of reports on this type of research, Chinese patents CN101255259A, CN101633740A, CN102134363A, CN101864119A, CN1487027A, and halloysite and attapulgite, as natural one-dimensional inorganic whisker materials, have the advantage of being cheap and easy to handle. There are still few researches on the application of dental restoration materials

Method used

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  • Antibacterial type inorganic whisker functional composite as well as preparation method and application thereof
  • Antibacterial type inorganic whisker functional composite as well as preparation method and application thereof
  • Antibacterial type inorganic whisker functional composite as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Add 5 g of attapulgite whisker particles to 100 mL of deionized water and disperse them ultrasonically for 60 minutes to obtain a suspension of inorganic whisker particles; mix 0.5 g of cetyltrimethylammonium bromide and 0.5 g of γ-formazol Acryloyloxypropyltrimethoxysilane was dissolved in 20mL of absolute ethanol; the dispersed attapulgite whisker particle suspension was stirred, and the surfactant alcohol solution was added dropwise, the temperature was kept at 80°C, and the reaction 4 hours. Suction filtration, washing, drying and grinding to obtain modified inorganic whisker particles.

[0037] (2) Combine 5.0 g of the modified inorganic whisker particles obtained in step (1) and 400 mL of silver nitrate solution (0.03 mol / L) at 40°C for 8 hours under magnetic agitation, filter with suction, wash, dry, and grind to obtain antibacterial type inorganic whisker particles.

[0038] (3) Add 5.0g of antibacterial inorganic whisker particles prepared in step (2) int...

Embodiment 2

[0042] (1) Add 5 g of attapulgite whisker particles to 100 mL of deionized water, and disperse them ultrasonically for 60 minutes to obtain a suspension of inorganic whisker particles; add 0.3 g of cetyltrimethylammonium bromide, 0.2 g of Tetraalkyltrimethylammonium and 0.6g γ-methacryloxypropyltrimethoxysilane were dissolved in 20mL of absolute ethanol; the dispersed attapulgite whisker particle suspension was stirred and added dropwise Surfactant alcohol solution, the temperature was kept at 80°C, and reacted for 4 hours. Suction filtration, washing, drying and grinding to obtain modified inorganic whisker particles.

[0043] (2) Mix 5.0 g of the modified inorganic whisker particles obtained in step (1) with 400 mL of [Ag(NH 3 ) 2 ] Cl solution (0.01mol / L) was stirred at 50° C. for 7 hours by magnetic force to prepare the antibacterial agent. Suction filtration, washing, drying and grinding to obtain the inorganic whisker antibacterial agent.

[0044] (3) Add 5.0g of the...

Embodiment 3

[0048] (1) Add 5 g of attapulgite whisker particles to 100 mL of deionized water and disperse them ultrasonically for 30 minutes to obtain a suspension of inorganic whisker particles; mix 0.5 g of tetradecyltrimethylammonium chloride and 0.8 g of γ-formazol Acryloyloxypropyltrimethoxysilane was dissolved in 20mL of absolute ethanol; the dispersed attapulgite whisker particle suspension was stirred, and the surfactant alcohol solution was added dropwise, and the temperature was kept at 80°C. React for 4 hours. Suction filtration, washing, drying and grinding to obtain modified inorganic whisker particles.

[0049] (2) 5.0 g of the modified inorganic whisker particles obtained in step (1) and 300 mL of copper nitrate solution (0.01 mol / L) were magnetically stirred at 50° C. for 9 hours to prepare an antibacterial agent. Suction filtration, washing, drying and grinding to obtain the inorganic whisker antibacterial agent.

[0050] (3) Add 5.0g of antibacterial inorganic whisker ...

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Abstract

The invention relates to an antibacterial type inorganic whisker functional composite which is a composite consisting of antibacterial type inorganic whisker particles and acrylic polymer. The antibacterial type inorganic whisker functional composite has an application of uniformly mixing the antibacterial type inorganic whisker functional composite with an acrylic monomer mixture, surface-modified silica, a photoinitiator and a coinitiator to obtain uncured resin plaster, and curing the uncured resin plaster by a visible light or an ultraviolet light to obtain antibacterial type dental prosthesis composite resin. The antibacterial type inorganic whisker functional composite can carry out reaction through surface modification and surface covering to produce prepolymer, so that the organic-inorganic interface bonding force in the composite resin is effectively improved, the mechanical properties of the composite are improved, the bending strength is 87.4-135.3 MPa, the bending modulus is 3.16-5.82 GPa, and the mass percentage of a dissolution value is 0.02-0.08 percent per 30 days; in addition, the antibacterial type inorganic whisker functional composite has excellent antibacterial property and is safe and nontoxic; and with the adoption of the antibacterial type inorganic whisker functional composite, secondary dental caries can be effectively avoided, and the needs of clinical application are well satisfied.

Description

technical field [0001] The invention relates to dental restoration materials, in particular to an antibacterial inorganic whisker functional composite material for dental restoration. Background technique [0002] Oral disease, especially dental caries, is a common disease with a high incidence rate. Together with cardiovascular and cerebrovascular diseases and tumors, it is listed by the World Health Organization as the three major non-communicable diseases that need to be prevented and controlled in the 21st century. Since the German Kulzer Company adopted heat-curing polymethyl methacrylate (PMMA) as a denture base material in 1937, the composite resin used in dental restoration has simple restoration process, good mechanical properties and biocompatibility, and beautiful appearance. With the advantages of cheap and other advantages, it has gradually replaced traditional dental restoration materials such as silver amalgam and has become the first choice for clinical appli...

Claims

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Application Information

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IPC IPC(8): A61K6/083A61K6/027
Inventor 庄韦岳邦毅陈强王凯张莉莉周磊吴越
Owner CHANGZHOU HIGH TECH RES INST OF NANJING UNIV
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