Ivoclar Vivadent IPS e.max Ceram - Manual (Page 19)

19
Framework preparation
The stipulations of the manufacturer of the zirconium oxide regarding framework fabrication and preparation
for veneering must be observed. When using IPS e.max ZirCAD, please observe the notes on finishing and
regeneration firing in the respective Instructions for Use.
Place the sintered zirconium oxide framework on the model. Reduce the margins of the premolar for a fused-on
ceramic shoulder down to the inner edge of the chamfer or shoulder preparation. Observe the following
procedure:
– Make sure that the minimum thicknesses are maintained even after minor adjustments.
– Check marginal area and carry out slight adjustments, if necessary.
– Do not 'post-separate' the bridge framework after sintering using separating disks, since this may result in undesired pre-
determined breaking points, which will subsequently compromise the stability of the all-ceramic restoration.
– Before veneering, clean framework under running water or with the steam jet and dry.
– The framework must not be blasted with Al 2 O 3 or polishing jet medium, since this would damage the
surfaces.
– Before ZirLiner is applied, the framework must be free of dirt and grease. Prevent any contamination after cleaning.
e.max
® Ceram –
Processing on ZrO
2
Frameworks
IPS
Reduce the margins of the premolar down to the inner edge of the chamfer or shoulder preparation for the fused-on ceramic shoulder.
Before veneering, clean framework under running water or with the steam jet and dry. The framework must not be blasted with Al 2 O 3 .
Finished and cleaned zirconium oxide framework
Pr
ocessing
on
ZrO
2
Frameworks