Prelude Link converts Prelude Adhesive or other manufacturers light-cured adhesives to dual-cure when needed for self/dual cure composites, cements or core materials. Prelude Link can be mixed with Prelude Adhesive and applied to the tooth or layered on the Prelude Adhesive after it has been applied to the tooth and light cured.  However higher bond strengths are achieved when layered rather then mixed.  It makes since to mix rather then layer for post cementation.