IPS E.Max ZirPress
IPS E.Max ZirPress facilitates the working procedures especially for long-span restorations due to the detailed esthetic ceramic reproduction of the wax-up. IPS E.Max ZirPress ingots are available in three levels of opacity and in A-D and four Bleach BL shades. Individual characterization or veneering is carried out using the IPS e.max Ceram Stains or layering materials.
STRENGTH: 600 MPa
Three processing techniques – depending on the preference
Ceramic shoulders with high accuracy of fit and firing stability
Innovative gingiva technique for implant superstructures
Shoulder preparation not needed. A mild champfer or a feather edge margin is good. 1mm buccal, lingual and occlusal reduction is ideal, but can go to .5mm in some areas, when reduction is limited. Minimum occlusal reduction of 0.5 mm; 1 mm is ideal. Adjustments and polishing: Adjust ZirPress crowns and bridges using water and air spray to keep the restoration cool and to avoid micro-fractures with a fine grit diamond. If using air only, use the lightest touch possible when making adjustments. A football-shaped bur is the most effective for occlusal and lingual surfaces (on anterior teeth); a tapered bur is the ideal choice for buccal and lingual surfaces. Polish ZirPress restorations with the porcelain polishing system of your choice.
ZirPress may be cemented using a resin reinforced glass ionomer such as Relyx Luting cement. When a greater bond is needed do to the lack of a retentive preparation, use resin cement like Relyx Unicam or Relyx Ultimate. Before cementing all ZirPress crowns, the interior surface of the crown needs to be cleaned with Ivoclean (Ivoclar Vivadent; Amherst N.Y.). This is critical in assuring maximum bond strength.