Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Poly methyl acrylyl oxygen ethyl trimethyl ammonium chloride-methyl methacrylate-silica denture base material and preparation method thereof

A technology of polymethacryloyloxyethyltrimethylammonium chloride and methacryloyloxyethyltrimethylammonium chloride is applied in dental preparations, pharmaceutical formulations, dental prostheses and other directions, and can solve mechanical problems. The performance can not fully meet the problems of dental restoration, broken base, broken base, etc.

Active Publication Date: 2012-07-04
TIANJIN UNIV
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor strength of the PMMA resin itself and the existence of internal stress during the curing process, the toughness and strength of the resin material are low, which leads to the vertical fracture of the upper denture in clinical restoration, and the fracture of the base often occurs during occlusion. The mechanical properties of PMMA cannot fully meet the requirements of oral restoration. Even with the best clinical experience, selection of indications, arrangement of artificial teeth and the most reasonable operating procedures, PMMA base materials still have mechanical strength problems, especially The impact strength is poor, which often causes the breakage of the base, and causes bacterial flora imbalance leading to denture stomatitis

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Poly methyl acrylyl oxygen ethyl trimethyl ammonium chloride-methyl methacrylate-silica denture base material and preparation method thereof
  • Poly methyl acrylyl oxygen ethyl trimethyl ammonium chloride-methyl methacrylate-silica denture base material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) After mixing 1.8g DMC and 58.2g MMA monomer, add it into a three-necked flask (the total amount of monomer is 60mL), add 1.8g nano-SiO 2 , ultrasonically dispersed suspension, add 1.5g hydroxyethyl cellulose (HEC) and 0.075g sodium dodecylbenzenesulfonate (SDBS) to 150m deionized water at the same time, pour it into a three-necked bottle after preliminary stirring , continue mixing on low speed. pass N 2 After 40min of protection, the temperature was raised to 90°C, and the inert atmosphere was maintained continuously, and 0.4g of initiator BPO was added to initiate polymerization. After the reaction for 9 h, the reaction system was cooled and filtered, the filtered product was repeatedly washed with deionized water, and dried under vacuum at 60 °C to a constant weight to obtain P(MMA-co-DMC) / SiO 2 nanocomposite;

[0022] (2) P(MMA-DMC) / SiO 2 The copolymerization product (powder) and the heat-setting tray water are mixed uniformly according to the mass ratio of ...

Embodiment 2

[0025] (1) After mixing 0.6g DMC and 59.4g MMA monomer, add it into a three-necked flask (the total amount of monomers is 60mL), and add 0.6g nano-SiO 2 , the suspension after ultrasonic dispersion, at the same time add 1.8g hydroxyethyl cellulose (HEC) and 0.067g sodium dodecylbenzenesulfonate (SDBS) in 150m deionized water, and pour it into a three-necked bottle after preliminary stirring , continue mixing on low speed. pass N 2 After 40min of protection, the temperature was raised to 90°C, and the inert atmosphere was maintained continuously, and 0.4g of initiator BPO was added to initiate polymerization. After the reaction for 9 h, the reaction system was cooled and filtered, the filtered product was repeatedly washed with deionized water, and dried under vacuum at 60 °C to a constant weight to obtain P(MMA-co-DMC) / SiO 2 nanocomposite;

[0026] (2) P(MMA-DMC) / SiO 2 The copolymerization product (powder) and the heat-setting tray water are mixed uniformly according to th...

Embodiment 3

[0029] (1) After mixing 3g DMC and 57g MMA monomer, add in the three-necked flask (the total amount of monomer is 60mL), add 3g nano-SiO 2 , the suspension after ultrasonic dispersion, at the same time add 1.6g hydroxyethyl cellulose (HEC) and 0.075g sodium dodecylbenzenesulfonate (SDBS) in 180m deionized water, and pour it into a three-necked bottle after preliminary stirring , continue mixing on low speed. pass N 2 After 40min of protection, the temperature was raised to 90°C, and the inert atmosphere was maintained continuously, and 0.6g of initiator BPO was added to initiate polymerization. After the reaction for 9 h, the reaction system was cooled and filtered, the filtered product was repeatedly washed with deionized water, and dried under vacuum at 60 °C to a constant weight to obtain P(MMA-co-DMC) / SiO 2 nanocomposite;

[0030] (2) P(MMA-DMC) / SiO 2 The copolymerization product (powder) and the heat-setting tray water are mixed uniformly according to the mass ratio o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
transmittivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a poly methyl acrylyl oxygen ethyl trimethyl ammonium chloride-methyl methacrylate-silica compound denture base material and a preparation method and application thereof. A second monomer of methyl acrylyl oxygen ethyl trimethyl ammonium chloride is used for regulating the charge environment of polymer matrix of a first monomer of methyl methacrylate, two monomers are copolymerized in float copolymerization mode, nanometer silicon dioxide (SiO2) is added to be compounded with copolymerization products, and the copolymerization products are mixed with hot thermosetting dental base polymer liquid to be heated and cured. The methyl methacrylate is used as a base material, an in-situ float copolymerization method is utilized to prepare nanometer compound materials, regulation on the charge environment of polymer matrix is achieved, SiO2 nanometer fillers are added to copolymerize pure polymethyl methacrylate (PMMA) resin, bending strength and tensile strength are greatly improved, dispersibility of SiO2 in matrix is successfully improved, and the problem of the PMMA denture base material in mechanical strength especially bending strength is resolved.

Description

technical field [0001] The invention belongs to the field of oral biomaterials, and more particularly, relates to a polymethyl methacrylate (PMMA) denture base material, especially using PMMA as a matrix, regulating the charge environment of the matrix, filling nano-silicon dioxide (SiO 2 ) particles to prepare PMMA-based nanocomposites. Background technique [0002] With the progress of society and the improvement of living standards, people's requirements for aesthetic restoration are becoming stronger and higher, and the requirements for oral materials are also getting higher and higher. At the same time, the retention of teeth has changed the disease spectrum of the oral cavity. According to relevant data, the incidence of dental caries in my country is 37%, with an average of 2.47 dental caries per person. Based on 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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083A61K6/027C08F220/14C08F220/34C08F2/44C08F2/18C08K3/36
Inventor 郑俊萍王佩佩苏强单佳慧王雷
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com