When the preparation is completed, the surface should be conditioned with the 20% polyacrylic acid provided with the Fuji II LC.  This is applied for 10 seconds with a disposable brush and then rinsed off with water.  Excess water is blown away but the tooth surface should not be completely dried.  Please note that we are not using the phosphoric acid etchant for this step.  The goal is to remove the smeal layer without demineralizing the surface. The Fuji II LC is a dual cured material (light activated polymerization and acid/base reaction) so a clear matrix strip should be placed and supported with a wedge.  The capsules of Fuji II LC contain the powder and the liquid in separate compartments.  The powder can become caked so it should be "fluffed" by stiking the foil package against the table top a few times.  Open the package and compress the plunger on the back of the capsule fully into the capsule by pushing it firmly down against the bench top.  This allows the liquid and powder to mix.  Place the activated capsule in a standard triturator, with the delivery tip of the capsule going through the hole on the arm of the amalgamator. Mix at high speed for 10 seconds.

Place the capsule in the delivery gun.  The groove around the capsule fits into the ridges on the gun.  Squeeze the racheting handle until the cement can be seen in the clear tip.  Insert the tip fully into the preparation against the lingual wall and squeeze out the material while withdrawing the tip.  Over fill slightly and pull the matrix band against the tooth surface to provide initial contouring of the restoration.  Light cure through the matrix for 20 seconds.

Finishing of the restoration can be accomplished with finishing burs, hand instruments and finishing strips.  You will find that the surface is softer than that of composite and does not take as high of a shine.  As an option you can complete a second glass ionomer restoration using Fuji IX.  This material has no light cured component and sets entirely via an acid/base reaction.  The material is susceptable to dehydration or excess moisture duing the first day after placement.  A layer of Optiguard is placed over the surface and cured to provide a smooth surface and limit moisture exhange.