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A snowflake-like mesoporous sio 2 Nanoparticle-reinforced dental composite resin and preparation method thereof

A nanoparticle and composite resin technology, which is applied in dental preparations, dentistry, dental prostheses, etc., can solve the problems of limited improvement of organic-inorganic interface bonding and failure to effectively penetrate, so as to achieve interface performance and reduce The effect of breaking the material and increasing the contact area

Active Publication Date: 2021-08-31
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the "sawtooth" structure exists only in rambutan-like SiO 2 The surface of the filler, so the organic monomer can only permeate on the surface of the filler, and cannot effectively penetrate the inside of the filler, which limits the degree of improvement of the organic-inorganic phase interfacial bonding

Method used

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  • A snowflake-like mesoporous sio <sub>2</sub> Nanoparticle-reinforced dental composite resin and preparation method thereof
  • A snowflake-like mesoporous sio <sub>2</sub> Nanoparticle-reinforced dental composite resin and preparation method thereof
  • A snowflake-like mesoporous sio <sub>2</sub> Nanoparticle-reinforced dental composite resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Snowflake-like mesoporous SiO 2 Preparation of nanoparticles

[0028] Under the action of magnetic stirring, 5 mL tetraethyl orthosilicate (TEOS) was added to the mixed solvent of cyclohexane and n-pentanol with a volume ratio of 12:1, and then added with a volume ratio of 1:0.2:10 A mixed solution composed of cetyltrimethylammonium bromide, urea and water was stirred and reacted at room temperature (23° C.) for 30 minutes, and then the temperature was raised to 70° C. to continue stirring and reacting for 24 hours. After centrifugation, washing, and extraction in an ethanol solution of ammonium nitrate, snowflake-like mesoporous SiO with a particle size of 500 nm was obtained 2 nanoparticles.

[0029] (2) Preparation of composite resin

[0030] According to the formula shown in Table 1, the snowflake-like mesoporous SiO 2 Nanoparticles, organic monomer and photoinitiator system are mixed, and when the inorganic filler is fully wetted by the resin matrix, it is ...

Embodiment 2

[0036] (1) Snowflake-like mesoporous SiO 2 Preparation of nanoparticles

[0037] Under the action of magnetic stirring, 3.2mL tetraethyl orthosilicate (TEOS) was added to the mixed solvent of cyclohexane and n-pentanol with a volume ratio of 10:1, and then added with a volume ratio of 1:0.35:12 A mixed solution composed of cetyltrimethylammonium bromide, urea and water was stirred and reacted at room temperature (23° C.) for 30 minutes, and then the temperature was raised to 70° C. to continue stirring and reacting for 24 hours. After centrifugation, washing, and extraction in an ethanol solution of ammonium nitrate, snowflake-like mesoporous SiO with a particle size of 200 nm was obtained 2 nanoparticles.

[0038] (2) Preparation of composite resin

[0039] According to the formula shown in Table 2, the snowflake-like mesoporous SiO 2 Nanoparticles, organic monomer and photoinitiator system are mixed, and when the inorganic filler is fully wetted by the resin matrix, it is ...

Embodiment 3

[0046] (1) Snowflake-like mesoporous SiO 2 Preparation of nanoparticles

[0047] Under magnetic stirring, 2.6mL tetraethyl orthosilicate (TEOS) was added to the mixed solvent of cyclohexane and n-pentanol with a volume ratio of 18:1, followed by the addition of A mixed solution composed of cetyltrimethylammonium chloride, urea and water was stirred and reacted at room temperature (23° C.) for 30 minutes, then the temperature was raised to 70° C. and stirred for 24 hours. After centrifugation, washing, and extraction in an ethanol solution of ammonium nitrate, snowflake-like mesoporous SiO with a particle size of 100 nm was obtained 2 nanoparticles.

[0048] (2) Preparation of composite resin

[0049] According to the formula shown in Table 3, the snowflake-like mesoporous SiO 2 Nanoparticles, organic monomer and photoinitiator system are mixed, and when the inorganic filler is fully wetted by the resin matrix, it is put into a three-roll mill (EXAKT 80E, Germany) for secon...

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Abstract

The invention relates to a snowflake-like mesoporous SiO 2 Nanoparticle reinforced dental composite resin and preparation method thereof, raw materials include inorganic filler, organic monomer and photoinitiator, and the inorganic filler is snowflake-like mesoporous SiO 2 nanoparticles. The preparation method includes: snowflake-like mesoporous SiO 2 After premixing the nanoparticles, organic monomers and photoinitiators, put them into a three-roll mill for further mixing, and process under vacuum negative pressure to obtain an uncured composite resin paste; finally, cure with visible light to obtain a dental composite resin. The preparation method of the dental composite resin of the invention is simple and convenient, has excellent performance, is suitable for industrial production, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of dental restoration materials, in particular to a snowflake-shaped mesoporous SiO 2 Nanoparticle-reinforced dental composite resins and methods for their preparation. Background technique [0002] Dental caries is a common and frequently-occurring disease of the oral cavity. It is listed by the World Health Organization (WHO) as one of the three major non-communicable diseases that need to be prevented and controlled in the 21st century, seriously affecting public health. High-quality restorative materials are the key to the treatment of dental caries. Compared with the traditionally used amalgam filling materials, composite resin has become the best choice for the clinical treatment of dental caries due to its advantages of beautiful color, easy operation and good biocompatibility. important material. This type of composite resin is mainly composed of organic monomers, inorganic fillers and photoinitiators, and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/887A61K6/76C08F220/32C08F222/14C08F220/28C08F220/14C08F2/44C08F2/48C08J3/28C08J3/24C08L33/10C08L35/02
Inventor 王瑞莉朱美芳陈红艳苗晓莉卫施琦
Owner DONGHUA UNIV