银纳米粒子涂层根管镍钛器械的抗菌性能及生物相容性研究
Study on the antibacterial performance and biocompatibility of silver nanoparticals-coated root canal nickel titanium instruments
金泓 1王汇文 1吴雨婷 1戴明睿 1冷迪雅 1朱婷婷 1吴大明1
作者信息
- 1. 南京医科大学附属口腔医院牙体牙髓病科,口腔疾病研究与防治国家级重点实验室培育建设点(南京医科大学),江苏省口腔转化医学工程研究中心,江苏南京(210029)
- 折叠
摘要
目的 探讨银纳米粒子涂层根管镍钛器械(silver nanoparticals-coated root canal nickel titanium instruments,AgNPs-NiTi)的抗菌性能及生物相容性.方法 利用脉冲电化学沉积技术制备AgNPs-NiTi.场发射扫描电镜观察AgNPs-NiTi的形貌,X射线衍射仪和能谱仪分析涂层的元素组成及含量,万能材料实验机检测AgNPs-NiTi的机械性能.将AgNPs-NiTi与粪肠球菌(E.faecalis)悬液共培养,细菌菌落计数法检测AgNPs-NiTi对E.faecalis的抗菌效果.构建离体牙根管内E.faecalis生物膜模型,将AgNPs-NiTi放入根管内模拟器械分离,用场发射电镜、活死菌染色法观察AgNPs-NiTi对E.faecalis生物膜的抗菌效果.AgNPs-NiTi与Raw264.7 细胞共培养,用CCK-8法检测其细胞毒性.结果 脉冲电化学沉积法在NiTi器械上构建银纳米粒子涂层,载银后NiTi器械的机械性能无明显变化.AgNPs-NiTi能够明显抑制E.faecalis的增殖,并显著破坏根管内E.faecalis生物膜.AgNPs-NiTi对Raw264.7 的增殖无明显影响,无明显细胞毒性.结论 AgNPs-NiTi的机械性能与镍钛器械相仿,可抑制E.faecalis及其生物膜的活性,具有良好的生物相容性.
Abstract
Objective To investigate the antibacterial performance and biocompatibility of silver nanoparticles-coated root canal nickel titanium instruments(AgNPs-NiTi).Methods AgNPs-NiTi was prepared using pulse electrochemical deposition.The morphol-ogy of AgNPs-NiTi was observed using field emission scanning electron microscopy(FE-SEM),and the elemental composition and con-tent were analyzed using X-ray diffraction(XRD)and energy dispersive spectroscopy(EDS).The mechanical properties of AgNPs-NiTi were tested.After Co-culturing AgNPs-NiTi with E.faecalis,the antibacterial effect was detected by colony-forming units method.By constructing an in vitro model of E.faecalis biofilm in the root canal of teeth,the antibacterial effect of AgNPs-NiTi was observed using FE-SEM and live/dead bacterial staining.In addition,AgNPs-NiTi was co-cultured with Raw 264.7 cells,and its cytotoxicity was de-tected by CCK-8.Results The pulse electrochemical deposition was used to construct a silver nanoparticle(AgNPs)coating on NiTi instruments with no significant change in the mechanical properties.AgNPs-NiTi significantly inhibited the proliferation of E.faecalis and damaged E.faecalis biofilm in the root canal.AgNPs-NiTi had no significant influence on the proliferation of Raw264.7 cells and had no cytotoxicity.Conclusion The mechanical properties of AgNPs-NiTi are similar to those of nickel titanium instruments.AgNPs-NiTi inhibits E.faecalis proliferation with good biocompatibility.
关键词
根管镍钛器械/银纳米粒子涂层/抗菌/生物相容性Key words
root canal nickel titanium instrument/silver nanoparticles(AgNPs)-coated/antibacterial performance/biocompatibility引用本文复制引用
基金项目
江苏省科教能力提升工程——江苏省研究型医院(YJXYYJSDW4)
江苏省医学创新中心(CXZX202227)
出版年
2024
NETL
NSTL
万方数据