Ivoclar Vivadent CosmoPost - Manual (Page 21)

21
Pressed post build-up
Cutting
Carefully place the divested post build-up on the master
model.
Divestment
(at the earliest after approx 60 minutes)
– After cooling, the investment cylinder may show cracks.
These cracks developed (immediately around the AlOx
plunger) during cooling as a result of the different CTEs of
the various materials (AlOx plunger, investment material
and pressed materials). They do not compromise the result
of the pressing cycle.
– Once the pressing procedure has been completed,
divesting is carried out according to the usual IPS Empress
method (blasting with Ivoclar Vivadent special jet medium
at 1 bar pressure).
Removing the pressed object / Finishing
Important
Extensive grinding may produce microcracks in the
ceramic framework as a result of local overheating.
Consequently, grinding should be reduced to a minimum.