... ..incomparable life-like effect, sparkling and crystal-clear 1. E-max, which was born after PFM crowns, is developed by Ivoclar ... . It won’t cause gingival discoloration and bleeding.4. E-max is with incomparable life-like effect, sparkling and crystal-clear ... is no blueness under the particular light.5 IPS E-max is metal free. It is perfect for Esthetic.