Preparation method of dental composite resin containing function monomer PMDM and modified hydroxylapatite and use thereof

Abstract

The invention belongs to the biomedical high molecular material technical field, in particular to a preparation method and the application of dental composite resin which contains functional monomer PMDM and modified hydroxyapatite. The preparation method includes the steps: 5%-20% of functional monomer PMDM is added to the substrate resin and placed in a constant-temperature oven; under the temperature of 40 DEG C -80 DEG C, the PMDM is dissolved in the substrate resin and stirred evenly; then photosensitizer and organic amine activator are added to the substrate resin and stirred evenly; then modified inorganic filler is added and diluted in solvent; the amount of solvent is 5%-10% of the mass of the mixture; the mass fraction of inorganic filler is 20%-70% of the total mass; inorganic filler is stirred evenly; the mixture is placed in a vacuum oven and placed under 40 DEG C-80 DEG C for 2-4 hours; the composite resin paste is obtained after the solvent is volatilized completely and the air bubbles are eliminated. The oral cavity repair resin has the advantages of good bond performance, ultrastructure, higher mechanical intensity, higher biocompatibility, having wide application prospect in the oral cavity repair field, having reasonable preparation line, obtainable raw materials, lower price, simple preparation process, having important popularization and application values.

Description

technical field [0001] The invention belongs to the technical field of biomedical polymer materials, and in particular relates to a preparation method and application of a dental composite resin containing functional monomer PMDM and modified hydroxyapatite. Background technique [0002] In the late 1980s, authoritative journals optimistically predicted that dental caries could be brought under control and might become another disease to be eradicated. However, the World Health Organization's survey on the epidemic does not support this assertion. The statistical results show that the prevalence of dental caries remains high in some underdeveloped countries. At present, the per capita caries rate in our country is 40%, among which the caries rate of children is 80%, that of young people is 60-70%, and that of the elderly is 52%. Each patient involves an average of 2-3 teeth. , the prevalence of gingivitis and periodontitis is also 70%. The large demand for oral and dental ...

AI Technical Summary

Problems solved by technology

Traditional restorative resins have no adhesiveness, and when they are filled into the tooth for restoration, if no adhesive is assisted, marginal microleakage will easily occur

Therefore, the research and development of cheap and efficient dental composite resins has important clinical significance. However, at present, there are relatively few cheap dental composite resins with independent intellectual property rights in China. Most of the clinically used dental composite resins are imported dental composite resins. There are few products, but each has its own advantages and disadvantages. There is no product with excellent comprehensive performance.

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