胶粘剂
傅里叶变换红外光谱
材料科学
核化学
粘结强度
扫描电子显微镜
变形链球菌
银纳米粒子
锆
分析化学(期刊)
纳米颗粒
化学
复合材料
纳米技术
化学工程
冶金
色谱法
工程类
生物
细菌
遗传学
图层(电子)
作者
Salem Almoammar,Muhammad Abdullah Kamran,Abdullah A. Alnazeh,Mohammad Almagbol,Mohammed Mohsen Al Jearah,Master Luqman Mannakandath
摘要
Abstract Zirconium dioxide silver‐doped nanoparticles (ZrO 2 AgDNPs) impacts the adhesive material in terms of its physical characteristics, antimicrobial properties, degree of conversion (DC), and micro‐tensile bond strength (μTBS) of orthodontic brackets to the enamel surface. A comprehensive methodological analysis utilizing a range of analytical techniques, including scanning electron microscopy coupled with energy‐dispersive x‐ray spectroscopy (EDX), Fourier‐transform infrared (FTIR) spectroscopy, DC analysis, and μTBS testing. A light‐curable orthodontic adhesive, specifically Transbond XT, was combined with ZrO 2 AgDNPs at 2.5% and 5%. As a control, an adhesive with no incorporation of ZrO 2 AgDNPs was also prepared. The tooth samples were divided into three groups based on the weightage of NPs: group 1: 0% ZrO 2 AgDNPs (control), group 2: 2.5 wt% ZrO 2 AgDNPs, and group 3: 5 wt% ZrO 2 AgDNPs. EDX graph demonstrated silver (Ag), Zirconium (Zr), and Oxygen (O 2 ), The antibacterial efficacy of adhesives with different concentrations of NPs (0%, 2.5%, and 5%) was assessed using the pour plate method. The FTIR spectra were analyzed to identify peaks at 1607 cm −1 corresponding to aromatic CC bonds and the peaks at 1638 cm −1 indicating the presence of aliphatic CC bonds. The μTBS was assessed using universal testing machine (UTM) and bond failure of orthodontic brackets was seen using adhesive remanent index (ARI) analysis. Kruskal–Wallis test assessed the disparities in survival rates of Streptococcus mutans . Analysis of variance (ANOVA) and post hoc Tukey multiple comparisons test calculated μTBS values. The lowest μTBS was observed in group 1 adhesive loaded with 0% ZrO 2 AgDNPs (21.25 ± 1.22 MPa). Whereas, the highest μTBS was found in group 3 (26.19 ± 1.07 MPa) adhesive loaded with 5% ZrO 2 AgDNPs. ZrO 2 AgDNPs in orthodontic adhesive improved μTBS and has acceptable antibacterial activity against S mutans . ZrO 2 AgDNPs at 5% by weight can be used in orthodontic adhesive alternative to the conventional method of orthodontic adhesive for bracket bonding. Research Highlights The highest μTBS was found in orthodontic adhesive loaded with 5% ZrO 2 AgDNPs. ARI analysis indicates that the majority of the failures fell between 0 and 1 among all investigated groups. The colony‐forming unit count of S. mutans was significantly less in orthodontic adhesive loaded with nanoparticles compared with control. The 0% ZrO 2 AgDNPs adhesive showed the highest DC.
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