Rapid interaction of powder and liquid assures an easy, smooth and fast non-tacky mix that is easily adapted to bulk fill in a single step. GlasIonomer FX  ULTRA shows negligible change  in  colour  and  translucency  with time,  ensuring  greater  aesthetic  stability as  compared  to  standard  glass  ionomer restoratives  which  display  significant change. GlasIonomer FX ULTRA exhibits exceptional resistance to colour variation with minimal difference in hue, chroma and shade over time. GlasIonomer  FX  ULTRA has  a  special glass  and  polyacrylic  acid  formulation that sets through a stable ionic bond to a strong and durable glass ionomer matrix, that consistently endures intra-oral forces. GlasIonomer FX ULTRA bonds reliably to both enamel and dentin, without requiring additional conditioning. High shear bond strength minimizes potential microleakage and provides an excellent seal against bacterial infiltration.