Study on Antibacterial Property of PMMA Denture Base Materials with Negative Ion Powder

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Liu, Meitian^1 ; Zhang, Xiaohui^1 ; Zhang, Jingting^1 ; Zheng, Qian^1 ; Liu, Bin^2

Key Laboratory of Oral Diseases of Gansu Province, Northwest University for Nationalities, Lanzhou

730030, China^1

College of Stomatology of Lanzhou University, Lanzhou

730000, China^2

关键词: Antibacterial effects;    Antibacterial properties;    Clinical application;    Denture base materials;    Denture base resins;    In-situ polymerization;    Standard samples;    Staphylococcus aureus;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012034/pdf
DOI  :  10.1088/1757-899X/301/1/012034

来源: IOP

【 摘 要 】

To prepare the denture base resin with negative ion powder and evaluate the antibacterial effect of denture base resin with different contents of negative ion powder for clinical application. Method: Denture base material with negative ion powder was prepared by in-situ polymerization method, 50mm ∗ 50mm ∗ 2mm standard samples were prepared respectively. Antibacterial properties were tested with the film contact method. Experimental bacteria: Staphylococcus aureus (ATCC6538), Escherichia coli (ATCC8099).Result:With the increase of the amount of negative ion powder, the inhibition rate of the composite material to Escherichia coli and Staphylococcus aureus showed an increasing trend, and the number of residual bacteria on the surface showed a decreasing trend. When the content of negative ion powder was 2%, the composite material Staphylococcus aureus and Escherichia coli were 77.9% and 80.3% respectively. When the addition ratio was 5%, the bactericidal rate of the composite material to Staphylococcus aureus and Escherichia coli reached 98.2% and 99.1% respectively. Conclusion: The denture base material containing more than 2%wt negative ion powder has strong sterilization.