Ivoclar Vivadent CosmoPost - Manual (Page 19)

19
Spruing
– Remove the modelled post build-up from the die and
remove any interfering areas. If necessary, carefully blow
off excess isolation material.
– Place the sprue in the direction of flow of the ceramic at
the thickest spot (use a round wax profile, 2.5–3 mm dia-
meter, depending on the size of the build-up).
Investment
Invest the pieces with the IPS Empress 2 Special Investment
Material or the IPS Empress 2 Speed Investment Material.
Investment with IPS Empress 2
Special Investment Material
Important
The pieces should be at least 3 mm apart. The distance of
at least 10 mm between the objects to be pressed and the
investment ring must be observed. Excess isolation materi-
al must be removed. Spruing must be carried out taking
the direction of flow of the ceramic into account. A
dummy object must be invested together with very small
individual pieces.
Important
Do not use debubblizers. Observe the corresponding
Instructions for Use of the IPS Empress 2 Special
Investment Material or IPS Empress 2 Speed Investment
Material. The IPS Empress Special Investment Material for
the layering technique cannot be used together with the
Cosmo Ingot. Observe the mixing times. Check the correct
fit of the paper ring around the ring base and the ring
gauge.
Indication Concen- Small ring (100 g) Large ring (200 g)
tration special liquid : special liquid :
distilled water distilled water
Preprosthetic 50–60% 11 ml : 11 ml (50%) 22 ml : 22 ml (50%)
build-up in 13 ml : 9 ml (60%) 26.5 ml : 17.5 ml (60%)
combination with
the CosmoPost
Investment with IPS Empress 2 Speed Investment
Material
Indication Concen- Small ring (100 g) Large ring (200 g)
tration special liquid : special liquid :
distilled water distilled water
Preprosthetic 40–50% 11 ml : 16 ml (40%) 22 ml : 32 ml (40%)
build-up in 13.5 ml : 13.5 ml (50%) 27 ml : 27 ml (50%)
combination with
the CosmoPost
When using the IPS Empress 2 Speed Investment Material
make sure to switch on the preheating furnace on time.
The investment material contains quartz powder.
Avoid inhalation of grinding dust because of the risk
of subsequent lung damage (silicosis).