Color Stability of Glass Ionomer Cement after Reinforced with Two Different Nanoparticles.

Aim: This study aimed to compare the staining characteristics of a commercially available restorative glass ionomer cement to a formulation reinforced by the addition of carbon nanotubes and another formulation reinforced by the addition of silver nanoparticles to the powder of the same cement. . Twenty samples each of a control glass ionomer cement (PULPDENT® Glass Fill®, Pulpdent Corp.