Used as a liner or a base under composite resin or amalgam restorations, GC Fuji Lining LC Paste Pak is the first light-cured glass ionomer lining material available in a paste-paste formula. It has a high-compressive strength, minimal polymerization shrinkage and extremely low solubility. Fuji Lining LC Paste Pak minimizes sensitivity and provides long-term fluoride release. It bonds well to tooth structure and composite, makes an ideal dentin substitute, and flexes and absorbs the stresses caused by the polymerization shrinkage, thermal expansion, and contraction of composite materials.