Fattah Zahra, Jowkar Zahra, Rezaeian Safoora
Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Int J Dent. 2021 Apr 16;2021:5565556. doi: 10.1155/2021/5565556. eCollection 2021.
The purpose of this study was to assess the influence of three different types of nanoparticles (silver (SNPs), titanium dioxide (TNPs), and zinc oxide (ZNPs)) on the microshear bond strength of conventional glass ionomer cement (CGIC) and resin-modified glass ionomer cement based on whether CGIC or RMGIC is used with four subgroups (based on the incorporation of SNPs, ZNPs, and TNPs in addition to a control subgroup) ( = 12) as follows: CGIC, CGIC + TNP, CGIC + ZNP, CGIC + SNP, RMGIC, RMGIC + TNP, RMGIC + ZNP, and RMGIC + SNP. After 24 hours, the SBS of specimens was tested and the obtained data were analyzed using two-way ANOVA and Tukey's HSD test. The obtained results showed that the incorporation of TNPs in two glass ionomers was not statistically significant compared with the control subgroups ( > 0.05). In the first group, the highest and lowest mean SBS were, respectively, observed in the CGIC + SNP subgroup and CGIC + ZNP subgroup. In the second group, RMGIC + ZNP and RMGIC + SNP, respectively, showed the highest and lowest mean SBS compared to the other subgroups. According to the results, it can be concluded that TNPs can be incorporated into both CGIC and RMGIC without compromising the bond strength of glass ionomers. SNPs and ZNPs can be, respectively, added to CGICs and RMGICs to improve the bond strength of the restoration.
本研究的目的是评估三种不同类型的纳米颗粒（银纳米颗粒（SNPs）、二氧化钛纳米颗粒（TNPs）和氧化锌纳米颗粒（ZNPs））对传统玻璃离子水门汀（CGIC）和树脂改性玻璃离子水门汀微剪切粘结强度的影响，具体取决于CGIC或RMGIC是否与四个亚组一起使用（除了一个对照组外，还基于SNPs、ZNPs和TNPs的掺入情况）（=12），如下所示：CGIC、CGIC+TNP、CGIC+ZNP、CGIC+SNP、RMGIC、RMGIC+TNP、RMGIC+ZNP和RMGIC+SNP。24小时后，测试标本的微剪切粘结强度（SBS），并使用双向方差分析和Tukey's HSD检验对获得的数据进行分析。获得的结果表明，与对照组相比，两种玻璃离子水门汀中掺入TNPs没有统计学意义（>0.05）。在第一组中，CGIC+SNP亚组和CGIC+ZNP亚组分别观察到最高和最低的平均SBS。在第二组中，与其他亚组相比，RMGIC+ZNP和RMGIC+SNP分别显示出最高和最低的平均SBS。根据结果可以得出结论，TNPs可以掺入CGIC和RMGIC中，而不会损害玻璃离子水门汀的粘结强度。SNPs和ZNPs可以分别添加到CGICs和RMGICs中，以提高修复体的粘结强度。
