It is light-cured, glass ionomer lining material available in a paste-paste formula that is used as a liner or a base under composite resin or amalgam restorations. High-compressive strength, minimal polymerization shrinkage, and extremely low solubility. GC Fuji Lining LC Paste Pak - Refill. Light-Cured, Fluoride Releasing, Radiopaque, Glass Ionomer Lining Cement, Refill: 1 - 7 Gm. (4.7 mL) Paste Pak Cartridge, 1 Mixing Pad, Instructions.