Like natural dentin, the IPS Empress Direct Dentin shades exhibit higher opacity and more opacious saturated chroma than the Enamel materials. They support the basic color of the tooth structure from within. The translucency of the Enamel materials has been adjusted to diffuse the dentinal substrate. Further gradations in translucency are achieved with the Trans 20, Trans 30 and Opal shades. The well-balanced and mutually complementing translucencies of the IPS Empress Direct Dentin and Enamel materials give you the power to create exceptional esthetics with accurate color every time, Opalescence is evident in the incisal area of natural teeth. In simple terms, this optical effect is based on the different ways in which long waves (red) and short waves (blue) of light are scattered. If a tooth is examined in incidental light it appears to have a bluish tinge, while in transmitted light this color changes to reddish-orange. This effect has to be imitated with the corresponding materials in the restoration of teeth, Two autoclavable shade guides depict the various shades and translucency levels of the IPS Empress Direct system. As with the IPS Empress all-ceramic materials, the shade tabs are made of high quality ceramic to provide long term stability for consistent shade match over time, IPS Empress Direct has an even distribution of filler particles which quickly and easily polish to a longlasting lustrous shine. It has similar polishing characteristics to both IPS Empress Esthetic and IPS Empress CAD. The polish is also retained similar to the gloss retention of a microfilled composite, Fluorescence, is produced by special pigments, which absorb energy from UV light and immediately emit it as visible light. We find these pigments in the dentin and we calibrate the IPS Empress system to produce the effect of natural fluorescence. Dr. Arnd Peschke, Ivoclar Vivadent AG, Liechtenstein Before After Astropol® and Astrobrush® bluephase® G2 Tetric® Color IPS Empress® Direct Flow Fluorescent effect Dr Eduardo Mahn, Saudi Arabia Application of Trans Opal Flow Final result after high gloss polishing IPS Empress Esthetic IPS Empress CAD IPS Empress Direct Natural tooth fluorescence, IPS Empress Direct Flow ideally complements the IPS Empress Direct range of materials. They allow the specific individual characteristics of natural teeth to be reproduced. With Trans Opal, the natural opalescence of incisal edges can be reliably mimicked, while Trans 30 enables lifelike translucency to be achieved. Bleach XL mainly serves to create customized, true-to-nature characteristics such as fluorosis effects. The three Effect materials offer optimum surface affinity while remaining stable. Due to the material?s consistency, restorations can be conveniently sculpted and contoured with either a spatula or brush.