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Bioactive mineral powder containing quasi-nanometer?particles, preparation method and application thereof in dental treatment

An active mineral, bioactive technology, applied in the application of dental treatment, bioactive mineral powder, preparation field, can solve the problem of inability to accurately control the composition of bioactive glass, dentin hypersensitivity for a long time, and failure to solve pollution and other problems to achieve the effect of improving the treatment effect, shortening the treatment time and avoiding pollution

Active Publication Date: 2012-12-19
BEIJING DATSING BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies have the following deficiencies: the composition of the bioactive glass cannot be precisely controlled; the pollution problem during the grinding process cannot be solved; the particle size of the powder is on the micron scale, and the shape of the dentinal tubules is an inverted conical tubular shape. The diameter near the pulp is about 3-4um, and the near surface is about 1um. The micron-sized bioactive glass particles cannot enter the dentin tubules, and the mechanism of mineralization phase formed only by the deposition of calcium and phosphorus ions has a great impact on the sealing of teeth. The contribution of the tubules is limited and slow, which leads to a long treatment time for dentin hypersensitivity, and the tubules are sometimes not fully occluded

Method used

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  • Bioactive mineral powder containing quasi-nanometer?particles, preparation method and application thereof in dental treatment
  • Bioactive mineral powder containing quasi-nanometer?particles, preparation method and application thereof in dental treatment
  • Bioactive mineral powder containing quasi-nanometer?particles, preparation method and application thereof in dental treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1: A bioactive mineral powder containing quasi-nanoscale particles

[0060] 1. The composition of mineral powder is:

[0061] Weight percentage (%) SiO 2 45 CaO 24.5 Na 2 o 24.5 P 2 o 5 6 total 100

[0062] 2. Preparation method:

[0063] 1) Calculation of raw materials: using analytically pure silicon dioxide (SiO 2 ), calcium carbonate (CaCO 3 ), sodium carbonate (Na 2 CO 3 ), phosphorus pentoxide (P 2 o 5 ) raw materials and calculate the percentage by weight of the required raw materials according to the composition:

[0064] weight percentage Silicon dioxide (SiO 2 ) 32.93 Calcium Carbonate (CaCO 3 ) 32.02 Sodium carbonate (Na 2 CO 3 ) 30.66 Phosphorus pentoxide (P 2 o 5 ) 4.39 total 100

[0065] 2) Melt the prepared mixture in a crucible kiln at 1350°C for 2 hours and homogenize it. The melting batch is made of quartz cruc...

Embodiment 2

[0075] Example 2: A bioactive mineral powder containing quasi-nanoscale particles

[0076] 1. The composition of mineral powder is:

[0077] Weight percentage (%) SiO 2 46.1 CaO 26.9 Na 2 o 24.4 P 2 o 5 2.6 total 100

[0078] 2. Preparation method:

[0079] 1) Calculation of raw materials:

[0080] weight percentage Silicon dioxide (SiO 2 ) 33.29 Calcium Carbonate (CaCO 3 ) 34.70 Sodium carbonate (Na 2 CO 3 ) 30.13 Phosphorus pentoxide (P 2 o 5 ) 1.88 total 100

[0081] All the other steps are the same as in Example 1.

[0082] 3. Detection: The method in Example 1 is used for detection. The particle size range of the biologically active mineral powder provided in Example 2 is less than 90um, and 1wt%-5wt% of quasi-nanoparticles with a pore size in the range of 100-900nm are contained. .

Embodiment 3

[0083] Example 3: A bioactive mineral powder containing quasi-nanoscale particles

[0084] 1. The composition of mineral powder is:

[0085] Weight percentage (%) SiO 2 55.1 CaO 22.2 Na 2 o 20.1 P 2 o 5 2.6 total 100

[0086] 2. Preparation method:

[0087] 1) Calculation of raw materials:

[0088] weight percentage Silicon dioxide (SiO 2 ) 41.84 Calcium Carbonate (CaCO 3 ) 30.10 Sodium carbonate (Na 2 CO 3 ) 26.09 Phosphorus pentoxide (P 2 o 5 ) 1.97 total 100

[0089] All the other steps are the same as in Example 1.

[0090] 3. Detection: The method in Example 1 is used for detection. In this embodiment, the particle size range of the bioactive mineral powder is less than 90um, which contains 1wt%-10wt% of quasi-nanoparticles with a pore size in the range of 100-900nm.

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Abstract

The invention relates to bioactive mineral powder containing quasi-nanometer?particles, a preparation method and an application thereof in a dental treatment. The bioactive mineral powder comprises the following components by weight percent: 40 to 65 % of SiO2, 15 to 30 % of CaO, 15 to 30 % of Na2O, and 2 to 8 % of P2O5, and particle size thereof is less than 90[mu]m, wherein 0.1 to 20.0 weight percent of the quasi-nanometer?particles have a bore diameter in a range of 100 to 900 nanometer. The bioactive mineral powder containing the quasi-nanometer?particles provided by the invention can directly enter in and seal dental tubules, so as to shorten treatment time, increase sealing rate and then improve treatment effect.

Description

technical field [0001] The invention relates to the field of biomedical materials, in particular to a bioactive mineral powder containing quasi-nanometer particles, a preparation method and its application in dental treatment. Background technique [0002] Professor Hench LL. of the United States has systematically studied Na 2 O-CaO-Si0 2 Relationship of system glasses to their biocompatibility (see Figure 8 ). The research results show that when the glass composition is within the range of E, especially at point F, its biocompatibility is the best, and osseointegration and cell integration can occur rapidly. [0003] Since then, people have studied Na 2 O-CaO-SiO 2 -P 2 o 5 system bioactive glass, it is in Na 2 O-CaO-SiO 2 -P 2 o 5 Apatite microcrystals are formed in the glass matrix, and after being implanted into the human body, hydroxyl groups are obtained from body fluids to form a surface hydroxyapatite layer, thereby presenting surface biological activity....

Claims

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Application Information

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IPC IPC(8): C03C3/097B24B1/00A61K8/25A61K33/42A61P1/02A61Q11/00A23G3/36
Inventor 张国强李次会李湘杰石道林盖增翟晖
Owner BEIJING DATSING BIO TECH
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