Iran Medical Council Journal of Iranian Medical Council 2645-338X 7 1 2024 01 01 Effects of Incorporation of Titanium Dioxide Nanoparticles on Mechanical Properties of Conventional Glass Ionomer Cement 99 106 184305 http://dx.doi.org/10.18502/jimc.v7i1.14206 EN Narges Panahandeh Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran 0000-0003-2083-3213 Elham Hasani Dental Research Center, Research Institute of Dental Sciences of Shahid Beheshti University of Medical Sciences, Tehran, Iran Saeed Safa Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran Mojtaba Hashemi Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran Hassan Torabzadeh Iranian Center for Endodontics research, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran Journal Article 2023 02 27 <strong>Background:</strong> Due to the poor mechanical properties of Glass Ionomer Cement (GICs), their use is limited to low stress-bearing areas. This study aimed to assess the effect of the addition of Titanium Dioxide (TiO2) nanoparticles on the flexural strength and surface hardness of GIC. <br /><strong>Methods: </strong>In this in vitro study, 3, 5, and 10 wt.% TiO2 nanoparticles were added to Fuji II conventional GIC powder. The purity and composition of the as-synthesized titania were investigated by using XRD and FT-IR tools. The homogeneity of powder particles within the used matrix was evaluated under a Scanning Electron Microscope (SEM).<br /><strong>Results:</strong> The SEM micrographs confirmed the homogenous mixing of TiO2 nanoparticles with GIC powder.<br /><strong>Conclusion: </strong>Nevertheless, the flexural strength of experimental groups was not significantly different from that of the control group (p=0.384). However, the surface hardness of experimental groups was decreased in comparison with that of the control group (p<0.001). <br /><br /> https://www.jimc.ir/article_184305_e7ee472da0ae5fbf0dcfab8e9a3acf2e.pdf