Ivoclar Vivadent PS Empress CAD Chairside - Manual (Page 29)

29
Fabrication of IPS Empress
®
CAD Restorations
– V
eneers / Cr
owns – stained / glazed
Stained and glazed IPS Empress CAD crown and veneer
Optional
Subsequent adjustments
After completion, additional adjustments (e.g. contact points) may become necessary. For that purpose,
IPS Empress Add-On 770 °C / 1418 °F is available.
Procedure:
– Before the adjustment, clean the restoration thoroughly from dirt and grease using a steam jet.
– Mix IPS Empress Add-On 770 °C / 1418 °F with IPS Empress Esthetic Veneer Build-Up Liquid to a workable consistency.
Make sure that the add-on material and liquid are evenly mixed so that an optimum firing result can be achieved.
– Apply the mixed add-on material on the cleaned, desired areas using a brush and slightly blot them with an absorbent
cloth.
– Position the adjusted restoration on the firing tray and fire it in the ceramic furnace.
– After firing, manually polish the supplemented areas to a high gloss.
Firing parameters for the corrective firing
IPS Empress CAD with
IPS Empress Add-On 770 °C / 1418 °F B
°C / °F
S
min.
t
°C/min. / °F/min.
T
°C / °F
H
min.
V
1
°C / °F
V
2
°C / °F
Corrective firing 403 04:00 60 770 02:00 450 769
B = Stand-by temperature °C / °F
S = Closing time/min.
t = Temperature increase rate °C/min. / °F/min.
T = Firing temperature °C / °F
H= Holding time/min.
V
1
= Vacuum-on temperature °C / °F
V
2
= Vacuum-off temperature °C / °F