▎ 摘　　要

NOVELTY - Preparing dental glass ionomer cement/fluorinated graphene composite material is claimed. The composite material is prepared by (i) adding fluorinated graphene powder into absolute ethanol, and ultrasonicating to obtain dispersed solution of fluorinated graphene-absolute ethanol, (ii) adding glass ionomer cement powder into dispersed solution of fluorinated graphene-absolute ethanol, ultrasonicating to obtain glass ionomer cement-fluorinated graphene dispersion solution, then adding into mortar, and completely evaporating the ethanol to obtain glass ionomer cement-fluorinated graphene mixed powder, and (iii) mixing the mixed powder with glass ionomer cement liquid, and solidifying to obtain final product. USE - Used as dental glass ionomer cement/fluorinated graphene composite material. ADVANTAGE - The composite material: has high micro hardness, compressive strength, wear resistance, antibacterial property, fluoride ion releasing property and solubility; and improves quality of filling materials and expands clinical application of glass ionomer cement. The preparation method: is simple and suitable for large-scale production; uses simple device; and has low cost.