Ivoclar Vivadent PS Empress CAD Chairside - Manual (Page 16)

16
Etching and silanating
Conditioning of the ceramic surface in preparation for the adhesive cementation is
critical for generating a sound bond between the cementation material and the all-
ceramic restoration.
Generally, glass-ceramics are etched using IPS
® Ceramic Etching Gel.
Etching produces retentive bonding surfaces, which increases the
bond between the luting composite and the all-ceramic restoration.
IPS Ceramic Etching Gel is exclusively intended for extra-oral use
and must not be applied in the oral cavity.
Subsequent silanating of the bonding surface using Monobond ® Plus results in a
sound bond between the etched all-ceramic material and the luting composite. The
bonding silane is thus an important contributor to the bonding strength between the
IPS Empress CAD restoration and the tooth structure.
Ceramic firing
IPS Empress CAD restorations are generally fired on a honey-comb firing tray. For that
purpose, the restorations are placed either on a firing pillow or metal pins. As an alter-
native and to better secure the restorations on the metal pins, IPS
® Object Fix Putty /
Flow auxiliary firing paste can be used.
Ceramic firing is conducted in the Programat ® CS2 ceramic furnace. The furnace
impresses with its economic efficiency and easy operating concept. The furnace is
supplied from the factory with preset programs for IPS Empress and IPS e.max.