Influence of TiO2, ZnO, and Ag Nanoparticles on the Antibacterial and Mechanical Properties of Modified Conventional Glass Ionomer Cements: A Systematic Review Carina Aaliyah Shaishta Komendangi1, Asti Meizarini2*, Anita Yuliati2 Abstract Background/Objectives: Glass ionomer cement (GIC) materials have inherent limitations regarding mechanical properties and antibacterial characteristics. This review aimed to