Emax
IPS e.max is a lithium disilicate glass ceramic that has optimized translucency, durability, and strength for full anatomical restorations. It combines lifelike materials and fracture resistant properties. This material is the most esthetic, while still offering superior durability featuring 500 MPa of flexural strength. Due to use of new technology and optimized processing parameters, IPS e.max is more evolved than previously available lithium disilicate ceramics and has increased 2.5 to 3 times in strength than other glass ceramic options. It is an excellent choice of material for anterior esthetics or posterior function. Emax is great for single crowns, veneers, inlays/onlays, and specifically anterior cases. It is not recommended for bridges as they do not allow for adequate connector heights with this material.
A shoulder prep is not needed, a mild chamfer or feather edge margins is adequate. For buccal, lingual, and occlusal reduction 1mm is ideal, but can go 0.5mm in some areas where further reduction is needed.
Zeus Full Zirconia can be cemented using resin reinforced glass ionomer such as RelyX Luting cement. For maximum bond strength, use resin cement like RelyX Ultimate, Panavia V5 or Multilink Automix. Before delivery to your office, the interior surface of all zirconia crowns are cleaned with Ivoclean and disinfected ready for insertion.
If adjustments are needed, use zirconia specific diamonds and wheels with diamond paste. Adjust full-contour zirconia crowns and bridges using fine diamond burrs, water and air spray to keep restoration cold and to avoid microfractures. Restorations can be polished with Brasseler Dialite system or similar substitutes. For a high shine, you can use Ziocon-Brite from DVA with stiff bristle brush or similar substitutes.