Polymethyl methacrylate (PMMA)-silicon nanotube (SNT) composite denture base material and preparation method and application thereof

A technology of polymethyl methacrylate and methyl methacrylate, used in dental preparations, pharmaceutical formulations, dental prostheses, etc., can solve the problem of less research on SNTs, and achieve the effect of improving bending strength and tensile strength

Inactive Publication Date: 2012-06-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the research on the application of SNTs has been deepening. There are many reports on the composite materials of carbon nanotubes and polymers, but there are relatively few studies on SNTs in composite materials.

Method used

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  • Polymethyl methacrylate (PMMA)-silicon nanotube (SNT) composite denture base material and preparation method and application thereof
  • Polymethyl methacrylate (PMMA)-silicon nanotube (SNT) composite denture base material and preparation method and application thereof
  • Polymethyl methacrylate (PMMA)-silicon nanotube (SNT) composite denture base material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Mix 1.8g of silicon nanotubes (SNTs) and 60g of MMA monomer (the total amount of monomer is 60mL), add the suspension after ultrasonic dispersion into a three-necked flask, and add 1.5g of hydroxyethyl Cellulose (HEC) and 0.074g sodium dodecylbenzene sulfonate (SDBS), pour it into a three-necked flask after preliminary stirring, and continue stirring at a low speed. Pass N 2 After 40 minutes of protection, the temperature was raised to 90° C., and the inert atmosphere was maintained continuously, and 0.4 g of initiator BPO was added to initiate polymerization. After reacting for 9 hours, the reaction system was cooled and filtered, the filtered product was repeatedly washed, and vacuum-dried to constant weight at 60°C to obtain a PMMA / SNTs nanocomposite, which was designated as PMMA / SNTs;

[0027] (2) Mix PMMA / SNTs (powder) and thermosetting tray water according to a mass ratio of 1:1, take out the mixture after it enters the dough stage, and fill it in the mold wi...

Embodiment 2

[0030] (1) Mix 0.6g of silicon nanotubes (SNTs) and 60g of MMA monomer (the total amount of monomer is 60mL), add the suspension after ultrasonic dispersion into a three-necked flask, and add 1.8g of hydroxyethyl Cellulose (HEC) and 0.075g sodium dodecylbenzene sulfonate (SDBS), pour it into a three-necked flask after preliminary stirring, and continue stirring at a low speed. Pass N 2 After 40 minutes of protection, the temperature was raised to 90° C., and the inert atmosphere was maintained continuously, and 0.5 g of initiator BPO was added to initiate polymerization. After reacting for 9 hours, the reaction system was cooled and filtered, the filtered product was repeatedly washed, and vacuum-dried to constant weight at 60°C to obtain a PMMA / SNTs nanocomposite, which was designated as PMMA / SNTs;

[0031] (2) Mix PMMA / SNTs (powder) and thermosetting tray water according to a mass ratio of 1:1, take out the mixture after it enters the dough stage, and fill it in the mold wi...

Embodiment 3

[0034] (1) Mix 3g of silicon nanotubes (SNTs) and 60g of MMA monomer (the total amount of monomer is 60mL), add the suspension after ultrasonic dispersion into a three-necked flask, and add 1.6g of hydroxyethyl cellulose in 150ml of deionized water at the same time element (HEC) and 0.069g sodium dodecylbenzenesulfonate (SDBS), pour it into a three-necked flask after preliminary stirring, and continue stirring at a low speed. Pass N 2 After 40 minutes of protection, the temperature was raised to 90° C., and the inert atmosphere was maintained continuously, and 0.5 g of initiator BPO was added to initiate polymerization. After reacting for 9 hours, the reaction system was cooled and filtered, the filtered product was repeatedly washed, and vacuum-dried to constant weight at 60°C to obtain a PMMA / SNTs nanocomposite, which was designated as PMMA / SNTs;

[0035] (2) Mix PMMA / SNTs (powder) and thermosetting tray water according to a mass ratio of 1:1, take out the mixture after it ...

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Abstract

The invention discloses a polymethyl methacrylate (PMMA)-silicon nanotube (SNT) composite denture base material and a preparation method and an application thereof. The preparation method comprises the following steps of: suspending and polymerizing 100 parts by weight of methyl methacrylate monomers and 1-10 parts by weight of silicon nanotubes, uniformly mixing a product with a thermal coagulation dental base acrylic resin liquid; and heating and curing. In the invention, a PMMA / SNTs nano-composite material is prepared by adopting an in-situ suspension polymerization method, SNTs are taken as fillers, the performance of the PMMA is improved by performing SNTs in-situ filling, so that bending strength and tensile strength are improved greatly in comparison to pure PMMA resin, problems existing on the aspect of mechanical strength, in particular on the aspect of tensile strength of the PMMA denture base material are solved, and an oral rehabilitation material with excellent performance is obtained.

Description

technical field [0001] The invention belongs to the field of oral biomaterials, and more specifically relates to a polymethyl methacrylate (PMMA) denture base material, in particular, PMMA is used as a matrix and filled with silicon nanotubes to prepare a PMMA-based nanocomposite material . Background technique [0002] With the progress of society and the improvement of living standards, people have increasingly strong requirements for aesthetic restoration and higher requirements for oral materials. At the same time, the persistence of teeth has changed the spectrum of oral diseases. According to relevant data, the incidence rate of dental caries in my country's population is 37%, with an average of 2.47 dental caries per person. According to a population of 1.2 billion, there are nearly 500 million dental caries patients in the country, and the total number of dental caries is more than 1 billion. Among adults, about 80% suffer from periodontal disease, which will cause ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083A61K6/027C08F120/14C08F2/18
Inventor 郑俊萍张祥苏强李建王佩佩
Owner TIANJIN UNIV
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