GC Fuji IX GP is ideal for permanent or temporary Class I and II restorations in children’s teeth, non-load-bearing Class I and II restorations in adult teeth, Class V and root surface restorations, core build-up and for use with a composite or an inlay in the immediate or delayed sandwich technique

Advantages:-

Easy-to-use packable posterior glass ionomer with high wear resistance
Intrinsic adhesion to dentine and enamel, without the need for etching and bonding or rubber dam
Can be used with metal matrices for easy contouring
Single step placement
Good radiopacity, facilitating postoperative diagnosis
Excellent biocompatibility

Fuji IX GP Extra specific:

Extra protection against decalcification
Extra fast so you can start finishing and polishing just two and a half minutes after mixing
Extra translucency for improved aesthetics