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Dental prepolymerized resin filler type composite resin

A resin and nanocomposite technology, used in dentistry, dental preparations, dental prostheses, etc., can solve the problems of poor clinical performance, poor mechanical properties, high price, etc., and achieve improved polishing performance, improved performance, and huge economic benefits. Effect

Inactive Publication Date: 2013-06-05
ZXTGY BEIJING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, almost all high-end visible light-curable composite filling resin materials rely on imports, which are very expensive
Almost all domestic visible light-curable composite filling resins have poor mechanical properties and poor clinical operation performance, especially the polymerization shrinkage and polishing performance of the materials cannot be compared with imported high-end products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Put 45ml of absolute ethanol solution and 9ml of 25% ammonia water into a 1L glass reactor, and stir for 20 minutes; dissolve 0.3g of PEG1000 in 65ml of deionized water, add the aqueous solution of the dispersant to the reactor, and stir at a high speed , to mix the solution evenly, slowly add 30ml, 4.48mol / L Si (OC 2 h 5 ) 4 , Stir the mixture at 25°C for 3 hours, after the reaction is over, a uniform and stable sol is obtained; after filtering and washing the sol, dry it at 80°C for 24 hours to obtain 40nm spherical silica powder body. Dissolve 100 g of this silica powder in 100 ml of deionized water, add 5 g of 3-methacryloxypropyltrimethylsilane to it, stir and react at 25°C for 3 hours, then dry at 100°C for 36 Hours, to obtain silanized spherical silica powder.

[0014] The pre-polymerized resin filler type composite resin is obtained through the following technical schemes and measures:

[0015] As described in Table 1, add methacrylate resin into a planetar...

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PUM

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Abstract

The invention provides a resin ribbon composite for filling a tooth. The resin ribbon composite for filling the tooth has a low solidified volume shrinkage rate, a high filler filling rate and good polishing performance and high intensity required by bearing filling. Methacrylate resin monomer, structural filler with the average grain diameter varying from 0.04 mu m to 0.4 mu m, and prepolymerized smash filler with the average grain diameter 32 mu m are mixed. In order to improve machining and mechanical property, generally the used prepolymerized filler is grinded to have the average grain diameter which is smaller than 32 mu m. The resin ribbon composite for filling the tooth further has structural filler with the average grain diameter smaller than 0.4 mu m and superfine filler with the average grain diameter smaller than 0.04 mu m.

Description

technical field [0001] The present invention relates to resin-based dental filling materials, and more particularly to restorative compositions incorporating uniformly dispersed ultrafine reinforcing particles which exhibit high strength, low cure volume shrinkage, good abrasion resistance, gloss and transparency. Background technique [0002] Dental composite resin is a polymer composite material mixed with specially treated inorganic fillers and bifunctional acrylate resins (such as Bis-GMA). It is cured at room temperature by means of a chemical initiation system or a photoinitiation system. Used together with pretreatment agent and adhesive. The cured composite resin has good physical properties and biocompatibility, and can be formulated into various colors similar to teeth according to clinical requirements, which makes up for the shortcomings of poor color of amalgam, and the raw materials of synthetic resin have low toxicity, which is harmful to the teeth. It is le...

Claims

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Application Information

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IPC IPC(8): A61K6/083
Inventor 胡永刚
Owner ZXTGY BEIJING TECH
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