Ivoclar Vivadent IPS Empress Esthetic - Manual (Page 21)

Model and die preparation
Fabricate a working model with removable die segments as usual. The application of a sealer is recommended to harden
the surface and to protect the stone die. However, the sealer layer must not result in any changes of the dimensions of the
stone die.
Subsequently, the spacer is applied as described below. Please be aware of the fact that the expansion of the investment
materials is coordinated with this procedure.
– For inlays/onlays, the spacer is applied in up to 3 layers and up to the preparation margin.
– For single crowns, the spacer is applied in two layers up to max. 1 mm from the preparation margin (spacer application
9–11 µm per layer).
– Two sealer layers are also applied up to max. 1 mm from the preparation margin for veneers.
Applying the spacer
Up to three layers of spacer are applied to inlays/onlays.
The surfaces are covered up to the preparation margin. Two layers of spacer are applied up to max. 1 mm from
the preparation margin. This measure helps prevent
undesired friction. Two layers of spacer are applied up to max. 1 mm from
the preparation margin.
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IPS Empress Esthetic Inlays / Onlays / Crowns – stained/glazed
Empress Esthetic –
Processing Procedure
IP
S
for inlay/onlay
preparation
for crown
preparation
for veneer
preparation