Antibiotic dental prosthetic materials and preparation method thereof

Abstract

The invention discloses an antibacterial dental prosthetic material and a preparation method thereof. The antibacterial dental prosthetic material is obtained by injecting the raw materials in a specific mold for curing and forming after even mixing of 25 percent to 94 percent (by weight) of epoxy resin, 0.5 percent to 40 percent (by weight) of polyamine and guanidine oligomer, 5 percent to 65 percent (by weight) of curing agent, the amount which is equivalent to 10 to 50 percent of the total weight of the three matters of filler and the amount which is equivalent to 0 to 20 percent of the weight of the epoxy resin of epoxy thinner. The dental prosthetic material prepared by the ingredients and the method of the invention is safe for the human body, does not damage the oral bacteria group and has the long-term antibacterial property; the antibacterial rate of the invention on staphylococcus aureus is more than 98 percent, and the antibacterial rate on Escherichia coli is more than 98 percent. The invention can be used as dental base material, adhesive, filling material, closure agent and other dental materials.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to an antibacterial dental restoration material and a preparation method thereof. Background technique [0002] Polymer materials have long been used as dental restoration materials due to their good processability and aesthetics. The main polymer species are acrylic acid, methacrylic acid, methyl methacrylate polymers or epoxy resins, etc. . However, in the restoration of teeth or the use of dentures, bacteria will grow in the repaired position, causing tooth discomfort or new infection problems. [0003] For this reason, in dental restorative materials, it is a common method to add antibacterial agents to make the restorative materials have certain antibacterial properties. [0004] U.S. Patent No. 5,385,728 discloses a method in which the quaternary ammonium compound benzalkonium chloride is mixed with an etchant to obtain an etchant with antibacterial prop...

AI Technical Summary

Problems solved by technology

[0005] Titanium dioxide is also a commonly used inorganic antibacterial agent. Adding titanium dioxide can make a resin composition with bactericidal effect or a deodorizing dental resin composition. The sterilization is based on the photocatalytic activity of titanium dioxide, but it is the photocatalytic activity. It can also decompose the resin itself, causing strength deterioration, or discoloration and deterioration, and there is a problem of not being durable

[0006] U.S. Patent No. 5,408,022 and U.S. Patent No. 5,733,949 prepare antibacterial dental materials by polymerizing monomers with antibacterial properties, but this method has fewer suitable monomers and is expensive

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