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Temporary crown and bridge repair material and preparation method thereof

A technology for restoration materials and crowns and bridges, which can be used in dental preparations, pharmaceutical formulations, dental prostheses, etc., and can solve problems such as difficulty in dispersion, short service life, and high specific surface area

Pending Publication Date: 2022-07-08
佛山(华南)新材料研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polymethyl methacrylate has the defects of low strength, poor wear resistance, and short service life. For this, the conventional method is to compound it by adding inorganic fillers to enhance mechanical properties and wear resistance. However, currently commonly used inorganic Fillers are mainly zero-dimensional inorganic fillers such as silica, alumina, calcium fluoride, strontium fluoride, titanium dioxide, and zirconia. These inorganic fillers have a high specific surface area, are easy to agglomerate, and are difficult to disperse, making it difficult to increase the amount of addition. , the improvement of the mechanical properties of the product material is limited, so the strength and hardness of the existing polymethyl methacrylate repair materials still need to be improved

Method used

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  • Temporary crown and bridge repair material and preparation method thereof
  • Temporary crown and bridge repair material and preparation method thereof
  • Temporary crown and bridge repair material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this example, a temporary crown and bridge repair material is prepared, and the composition of the preparation raw materials is shown in Table 1:

[0024] Table 1

[0025] Preparation of raw materials Dosage (g) methyl methacrylate 100 KH570 10 Dried dibenzoyl peroxide 0.03 Toner (iron oxide yellow and titanium dioxide with a mass ratio of 1 / 20) 0.2 Inorganic filler silica 20 Inorganic filler four-needle zinc oxide 20

[0026] Wherein, the dried dibenzoyl peroxide is obtained by drying dibenzoyl peroxide with a water content of about 30% using a vacuum freeze dryer, and the dried dibenzoyl peroxide is the same in the following examples.

[0027] The specific preparation method of the temporary crown and bridge repair material includes the following steps: adding silane coupling agent KH570 to methyl methacrylate, stirring at a stirring speed of 100 rpm for 2 minutes, then adding initiator dibenzoyl peroxide, and heat...

Embodiment 2

[0029] In this example, a temporary crown and bridge repair material is prepared, and the composition of the preparation raw materials is shown in Table 2:

[0030] Table 2

[0031] Preparation of raw materials Dosage (g) methyl methacrylate 100 KH570 10 Dried dibenzoyl peroxide 0.03 Toner (iron oxide yellow and titanium dioxide with a mass ratio of 1 / 20) 0.2 silica 25 Four needle-shaped zinc oxide 15

[0032] The preparation method of the temporary crown and bridge repair material in this example is basically the same as that in Example 1.

Embodiment 3

[0034] In this example, a temporary crown and bridge repair material is prepared, and the composition of the preparation raw materials is shown in Table 3:

[0035] table 3

[0036]

[0037]

[0038] The preparation method of the temporary crown and bridge repair material in this example is basically the same as that in Example 1.

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PUM

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Abstract

The invention discloses a temporary crown and bridge repairing material. The temporary crown and bridge repairing material is prepared from the following raw materials in parts by mass: 100 parts of methyl methacrylate, 30-60 parts of composite inorganic filler, 0.01-1 part of initiator and 0.01-3 parts of toner, the composite inorganic filler is selected from at least two of zero-dimensional inorganic filler, one-dimensional inorganic filler, two-dimensional inorganic filler and three-dimensional inorganic filler. By adopting the composite inorganic filler, the polymerization inhibition of the filler can be reduced, the filling amount of the filler is increased, the mechanical property of the temporary crown and bridge repair material is improved through the synergistic effect of the fillers with different dimensions, and the product repair material has high bending strength and hardness and low water absorption value and dissolution value.

Description

technical field [0001] The invention relates to the technical field of dental repair materials, in particular to a temporary crown and bridge repair material and a preparation method thereof. Background technique [0002] With the advancement of science and technology, electronic information technology has developed rapidly. The introduction of the combination of computer system intelligent design (CAM) and computer precision machining (CNC) has resulted in pioneering development and application in the field of bioremediation materials. The introduction of CAM / CNC technology makes the product have the characteristics of short production cycle, high product precision and good aesthetic effect, which improves the overall performance of the product, and at the same time makes the product have flexible designability, short design cycle and quality stability. control. [0003] Polymethyl methacrylate is a CAD / CAM block restoration material with good comprehensive properties, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/14C08F2/44C08K3/36C08K7/08C08K3/04A61K6/62A61K6/64A61K6/71A61K6/72A61K6/75A61K6/76A61K6/78A61K6/887
CPCC08F120/14C08F2/44C08K3/36C08K7/08C08K3/041C08K3/042A61K6/887A61K6/75A61K6/76A61K6/71A61K6/72A61K6/78A61K6/62A61K6/64C08K2201/011C08L33/12
Inventor 鲍晓珍李德珊麦耀光杜韩杰崔本仓卢江湖
Owner 佛山(华南)新材料研究院
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