Effect of incorporation of zinc oxide nanoparticles on mechanical properties of conventional glass ionomer cements.

Aim: The aim of this study is to investigate the physical properties of conventional and resin-modified glass ionomer cements (GICs) compared to GICs supplemented with zinc oxide (ZnO) nanofiller particles at 5% (w/w).

Methods: In this study, ZnO nanoparticles of different morphologies (nanospherical, nanorod, and nanoflower) were incorporated to glass ionomer powder. The samples were subjected to the flexural strength ( = 20) and surface hardness test ( = 12) using a universal testing machine and a Vickers hardness machine, respectively.