Composite dental restoration resin with silica microspheres as filler and preparation method thereof

A technology of silica and composite resin, applied in dental preparations, dentistry, medical science, etc., can solve the problems of low strength of composite resin, high curing shrinkage rate, and difficulty in uniform dispersion, etc., and achieve excellent physical and mechanical properties, dispersion Good performance and low raw material price

Inactive Publication Date: 2012-07-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nano-inorganic fillers have a high specific surface area and high surface energy, but they are very easy to agglomerate, and it is difficult to disperse evenly in the resin matrix. The strength of the resin is not high, and the curing shrinkage rate is also high

Method used

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  • Composite dental restoration resin with silica microspheres as filler and preparation method thereof
  • Composite dental restoration resin with silica microspheres as filler and preparation method thereof
  • Composite dental restoration resin with silica microspheres as filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The components of the composite resin and the content of each component are:

[0038] components

quality score

Bis-GMA

14.35

TEGDMA

14.35

CQ

0.06

4-EDMAB

0.24

Modified SiO 2 Microspheres

71

[0039] (1) The specific steps for the preparation of silica microspheres are as follows:

[0040]Measure 225mL of absolute ethanol, 150mL of ammonia water, and 30mL of ultrapure water in a three-neck flask, mix them evenly, then add 17.5mL of tetraethylorthosilicate TEOS, stir at 60±5°C for 2 hours, and wash the obtained solution with distilled water until neutral. Then wash with absolute ethanol 2 to 3 times, dry in vacuum at 110°C for 24 hours, and grind; modified SiO 2 The method is, the SiO after the above treatment 2 , γ-methacryloxypropyltrimethoxysilane (γ-MPS), cyclohexane and n-propylamine were mixed and stirred at 25±5°C for 30-40min; then heated to 60±5°C and stirred for 30-40min; t...

Embodiment 2

[0044] The components of the composite resin and the content of each component are:

[0045] components

quality score

Bis-GMA

20.09

TEGDMA

8.61

CQ

0.06

4-EDMAB

0.24

Modified SiO 2 Microspheres

71

[0046] (1) The specific steps for the preparation of silica microspheres are as follows:

[0047] Measure 225mL of absolute ethanol, 150mL of ammonia water, and 30mL of ultrapure water in a three-neck flask, mix them evenly, then add 17.5mL of tetraethylorthosilicate TEOS, stir at 60±5°C for 2 hours, and wash the obtained solution with distilled water until neutral. Then wash with absolute ethanol 2 to 3 times, dry in vacuum at 110°C for 24 hours, and grind; modified SiO 2 The method is, the SiO after the above treatment 2 , γ-methacryloxypropyltrimethoxysilane (γ-MPS), cyclohexane and n-propylamine were mixed and stirred at 25±5°C for 30-40min; then heated to 60±5°C and stirred for 30-40min; t...

Embodiment 3

[0051] The components of the composite resin and the content of each component are:

[0052] components

quality score

EBPADMA

20.09

TEGDMA

8.61

CQ

0.06

4-EDMAB

0.24

Modified SiO 2 Microspheres

71

[0053] (1) The specific steps for the preparation of silica microspheres are as follows:

[0054] Measure 225mL of absolute ethanol, 150mL of ammonia water, and 30mL of ultrapure water in a three-neck flask, mix them evenly, then add 17.5mL of tetraethylorthosilicate TEOS, stir at 60±5°C for 2 hours, and wash the obtained solution with distilled water until neutral. Then wash with absolute ethanol 2 to 3 times, dry in vacuum at 110°C for 24 hours, and grind; modified SiO 2 The method is, the SiO after the above treatment 2 , γ-methacryloxypropyltrimethoxysilane (γ-MPS), cyclohexane and n-propylamine were mixed and stirred at 25±5°C for 30-40min; then heated to 60±5°C and stirred for 30-40min; t...

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Abstract

The invention relates to a composite dental restoration resin with silica microspheres as filler and a preparation method thereof. In percentage by weight, the resin consists of 25 to 34.7 percent of resin matrix, 0.3 percent of photoinitiator and 65 to 74.7 percent of silane coupling agent surface-modified inorganic filler. The preparation method includes the following steps: (1) preparing processed SiO2; (2) further obtaining modified monodisperse submicron silica microspheres; (3) uniformly mixing the resin matrix and the photoinitiator, so that the composite dental restoration resin is obtained. The physical and mechanical properties of the composite dental restoration resin obtained by the invention are excellent, the service life is long, the prices of materials are low, curing shrinkage is low, and the composite dental restoration resin can be used as photocured composite resin for dental restoration. The preparation method is simple, the materials are easy to obtain, and are relatively cheap, and the invention is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the field of composite resin and its preparation, and in particular relates to a composite resin for dental restoration using silica microspheres as a filler and a preparation method thereof. Background technique [0002] Since the appearance of composite resin as a dental restoration material in the mid-1960s, it has been widely used to replace amalgam due to its aesthetics, excellent physical properties, convenient operability, and good biocompatibility. , has become the most commonly used dental restoration material. In recent years, visible light-curable composite resin has become more and more popular, and its application range has gradually expanded from anterior tooth restoration to posterior tooth restoration, but there are still some shortcomings, such as insufficient mechanical strength, low wear resistance and polymerization shrinkage. These deficiencies limit its application. [0003] The composite resin is mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083A61K6/027
Inventor 张青红苗晓莉朱美芳王宏志李耀刚
Owner DONGHUA UNIV
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