添加载银抗菌剂的藻酸盐印模材料抗菌性能及物理性能研究

目的:对添加磷酸锆载银抗菌剂的藻酸盐印模材料抗菌性能及物理性能进行测试和评价,为口腔抗菌印模材料的研制奠定实验基础。方法:以1%添加比将磷酸锆载银抗菌剂加入到藻酸盐印模材料,采用薄膜密着法,测试添加抗菌剂后印模材料的抗菌活性,并参照相关标准对材料的结固时间,压应变等物理性能进行测试和评价。结果:添加磷酸锆载银抗菌剂的藻酸盐印模材料对金黄色葡萄球菌和大肠杆菌的抗菌率分别为99.85%和99.83%。添加抗菌剂对藻酸盐印模材料主要物理性能没有显著影响(P>0.05)。结论:以1%的比例添加磷酸锆载银抗菌剂可赋予藻酸盐印模材料强抗菌性能。添加抗菌剂对藻酸盐印模材料的主要物理性能没有显著影响,可满足临床应用要求。

Antibacterial activity and physics properties of the alginate impression material impregnated with silver-zirconium phosphate antimicrobial

Objective To measure the in vitro antibacterial activities and physics properties of the alginate impression material impregnated with silver-zirconium phosphate antimicrobial.Methods Silver-zirconium phosphate antimicrobial was added into the dental alginate impression material in the proportion of 1%.The antibacterial ratios were tested using a method according to the Chinese and Japanese standards for testing antibacterial efficacy of antibacterial materials.Bacteria strains used included Staphylococcus aures ATCC 6538 and Escherichia coli ATCC 25922.The physics properties of the experimental self-disinfecting alginate impression material were also evaluated.Results The antibacterial ratios of the alginate impression material impregnated with antimicrobial agent against two tested bacteria strains were all beyond 99%.The impregnation of the antibacterial agent has no significant affect on the main physics properties of the alginate impression material(P>0.05).Conclusion The impregnation of Silver-zirconium phosphate antimicrobial could offer alginate impression material with strong antibacterial activities against two tested bacteria strains.The physics properties of the experimental self-disinfecting alginate impression material could be satisfied to the requirements of clinical application.