Characterizations of Partially Silanized ZnO and MgO Nanoparticles in Modified Resin Infiltrant: An Experimental Study

This study investigates the effects of partial silanization on the properties of zinc oxide (ZnO) and magnesium oxide (MgO) nanoparticles within a resin infiltrant, employing a suite of characterization techniques to understand the implications of this surface modification. Through Fourier-Transform InfraRed (FT-IR) spectroscopy, we confirmed the successful attachment of silane coupling agents to the nanoparticle surfaces, indicating substantial chemical modifications. X-Ray Diffraction (XRD) analysis revealed that these modifications led to an increase in particle size and slight peak broadening, suggesting alterations within the crystal lattice due to the presence of the silane coupling layer. Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray Spectroscopy (EDS) further demonstrated improved dispersion and reduced agglomeration of the silanized nanoparticles compared to their non-silanized counterparts, highlighting the homogeneous distribution of elemental components such as silicon and carbon. Transmission Electron Microscopy (TEM) provided corroborative morphological details, showing changes in shape and size that align with the findings from FT-IR and XRD, underscoring the physical changes as a direct consequence of the chemical modifications. This multi-technique approach not only illustrates the successful partial silanization of nanoparticles but also underscores its potential to enhance the mechanical and antibacterial properties of resin infiltrants, promising significant benefits for restorative dental applications.