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Glass powder of water-based glass ionomer cement and preparation method thereof

A glass powder, glass technology, applied in the direction of dental preparations, dental prostheses, pharmaceutical formulations, etc., can solve problems such as high price

Active Publication Date: 2013-03-20
ADVANCED TECHNOLOGY & MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of glass ionomer products from Fuji, 3M, and Kerr, the current price of each set of glass ionomers is about 500-800 yuan, and the above-mentioned companies have a tendency to jointly monopolize and control the Chinese market
At present, the clinical application is mainly based on the GC II glass ionomer cement of Fuji Company, and its product composition is Al 2 o 3 (50~55)%, SiO 2 (30~35)%, SrO (8~10)%, ZnO(4.5~6.5)%, other oxides (0~7.5)%, which is characterized by high strength and stable performance, but expensive

Method used

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  • Glass powder of water-based glass ionomer cement and preparation method thereof
  • Glass powder of water-based glass ionomer cement and preparation method thereof
  • Glass powder of water-based glass ionomer cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0045] Embodiment 1-4 glass powder and its preparation

[0046] According to the chemical raw material components of the glass powder of the dental water-based glass ionomer cement of the present invention, four batches of glass powders, namely the four examples in the table below, were prepared by using the preparation method of the present invention. in,

[0047] Table 1 is the raw material composition table of the glass powder of four embodiments of the present invention;

[0048] Table 2-A and Table 2-B are the process steps and process parameter tables of four embodiments of the glass powder preparation method of the present invention;

[0049] Table 3 shows the particle size distribution of the glass powder prepared in Example 3 of the present invention.

[0050] Table 1 Raw material composition list (mass %) of the glass powder of the present invention

[0051]

[0052] Table 2-A Process steps and process parameter table of the glass powder preparation method of t...

Embodiment 5

[0075] Get 3.3g of the glass powder obtained in Example 1, and then take 1.0g of Fuji's GC II type glass ionomer cement liquid, put them respectively on the mixing paper for subsequent use, and use a plastic spatula to divide the powder evenly into two First, add the first part to the liquid and mix for 10 seconds, then add the remaining powder and mix for 15-20 seconds to obtain the test cement paste, and measure the net cement paste after the glass powder and liquid are cured according to the above method. Curing time and compressive strength, the results are shown in Table 4.

Embodiment 6

[0077] In Example 5, the glass powder prepared in Example 1 was replaced with the glass powder prepared in Example 2. Others were the same as in Example 5. The performance test results are shown in Table 4.

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Abstract

The invention discloses glass powder of water-based glass ionomer cement and a preparation method thereof, belonging to the field of inorganic non-metal materials. The powder is prepared from the following raw materials in percentage by mass: 25-35% of Al2O3, 30-45% of SiO2, 5-8% of MO, 2-8% of Na2O, 5-10% of ZnO, 3-9% of P2O5 and 5-15% of CaF2, wherein MO is one of SrO and CaO or a mixture of the two. The preparation method of the powder sequentially comprises the following steps: preparing the raw materials, fusing, quenching with water, pulverizing, performing surface treatment, drying, grinding and screening. Compared with the prior art, the invention has the advantages of low cost, stable product quality, fine mechanical comprehensive properties, X ray rejection, continuous fluorion release and uniform particle size distribution, and is suitable for industrial mass production.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials and preparation thereof, in particular to a glass powder of water-based glass ionomer cement used in dentistry and a preparation method thereof. Background technique [0002] Dental water-based glass ionomer cement (referred to as glass ionomer, GIC) is a widely used dental bonding restoration material. In 1972, Wilson and Kent used GIC material in dentistry. At present, it has been used in many clinical situations in dentistry. GIC, such as restoration of cervical defects, restoration of deciduous teeth, crown core formation, cavity lining, crown and bridge cementation, pit and fissure sealing, etc. [0003] Glass ionomer consists of powder and liquid. The powder is fluoroaluminosilicate glass powder, and the liquid agent used in the early stage is polyolefinic acid aqueous solution. This kind of glass ion restoration is formed by acid-base reaction between glass powder ...

Claims

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Application Information

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IPC IPC(8): C03C12/00A61K6/033A61K6/027A61K6/838
Inventor 陈冬冬仇越秀梁新杰张娓宋文娟李强高春雷储云龙
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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