Ivoclar Vivadent PS Empress CAD Chairside - Manual (Page 28)

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Glaze firing with IPS Empress Universal Glazing Paste
Once the desired shade has been achieved and the individualized characterizations completed, the glaze firing is conducted.
The following working procedure should be observed:
– Extrude IPS Empress Universal Glaze Paste from the syringe and mix
thoroughly.
– Thin the material to the desired consistency using IPS Empress Universal
Glaze and Stain Liquid. Do not excessively dilute the material, since this
may render the glazing procedure difficult to control.
– Apply the glazing material evenly on the entire outer surfaces of the
restoration.
– The glazing material must not come into contact with the inner aspects
of the restoration.
– Avoid pooling and excessively thick glazing material layers.
– Excessively thin glazing material layers result in an unsatisfactory gloss.
– The objects are positioned on the honey-comb firing tray same as for
the previous firing procedure.
– The glaze firing is conducted in a compatible ceramic furnace (e.g.
Programat CS2).
– If the gloss is unsatisfactory after the first glaze firing, further glaze
firing procedures may be conducted using the same firing parameters.
Glaze firing with IPS Empress Universal Glaze Spray
IPS Empress Universal Glaze Spray is used as an alternative to IPS Empress Universal Glaze Paste for the glazing of
IPS Empress CAD restorations.
– Shake the spray can well immediately before use until the mixing ball in the container is moving freely (approximately
20 seconds).
– Hold the IPS Empress CAD restoration by its inner aspect using tweezers.
– Hold the spray can as upright as possible during spraying.
– Spray the restoration from all sides to coat the characterized restoration
with an even layer. Shake the spray can well between individual bursts.
– Wait briefly until the glaze layer is dry and has assumed a whitish col-
our. Subsequently, apply a second layer of Glaze Spray. If Glaze Spray
accidentally reaches the inner aspects of the restoration, remove it with
a dry brush.
– Place the IPS Empress CAD restoration on a honey-combed firing tray for the (stain and) glaze firing and fire it according
to the firing parameters of the respective Instructions for Use.
– Should renewed application of the spray be necessary after firing, spray the restoration in the same manner again and
fire it using the same firing parameters.
The objects are placed on the honey-comb firing tray and the firing
program is started.
The glazing material is applied evenly on the entire outer surfaces of
the restoration.
10 cm
Firing parameters for the glaze firing (note the temperature control)
IPS Empress CAD with
IPS Empress Universal B
°C / °F
S
min.
t
°C/min. / °F/min.
T
°C / °F
H
min.
V
1
°C / °F
V
2
°C / °F
Glaze firing 403 6:00 100 790 1:00 – 2:00 – –
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