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目的探讨添加质量分数0.525%的NaClO消毒液对琼脂-藻酸盐联合印模抗菌性能和物理性能的影响,为口腔抗菌印模材料的研制奠定实验基础。方法本研究于2007年12月至2009年12月在南昌大学附属口腔医院进行。将质量分数0.525%的NaClO消毒液加入到琼脂-藻酸盐联合印模材料中,采用玻板密闭法,测试添加消毒液后印模材料的抗菌活性,并参照相关标准对对结固时间,压应变等物理性能进行测试和评价。结果添加质量分数0.525%的NaClO消毒液的琼脂-藻酸盐联合印模材料,对金黄色葡萄球菌和大肠杆菌的抗菌率分别为99.83%和99.82%,对其本身的主要物理性能没有显著影响(P>0.05)。结论质量分数0.525%的NaClO消毒液可赋予琼脂-藻酸盐联合印模材料强抗菌性能,但对其主要物理性能没有显著影响,可满足临床应用要求。
Objective To investigate the effect of adding NaClO disinfectant with mass fraction of 0.525% on the antibacterial and physical properties of agar-alginate co-impressions, and lay the experimental foundation for the development of oral anti-bacterial impression material. Methods The study was performed at the Affiliated Stomatological Hospital of Nanchang University from December 2007 to December 2009. The NaClO disinfectant with the mass fraction of 0.525% was added to the agar-alginate joint impression material, and the antibacterial activity of the impression material after adding the disinfectant solution was tested by the glass plate sealing method. With reference to relevant standards, Compressive strain and other physical properties for testing and evaluation. Results The agar-alginate imprinted material with 0.525% NaClO disinfectant had an antibacterial rate of 99.83% and 99.82% against Staphylococcus aureus and Escherichia coli, respectively, with no significant effect on their main physical properties (P> 0.05). Conclusion The NaClO disinfectant with mass fraction of 0.525% can confer strong antimicrobial activity on agar-alginate imprinted materials, but has no significant effect on its main physical properties, which can meet the clinical application requirements.