Ivoclar Vivadent IPS e.max CAD Labside - Manual (Page 18)

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In the staining technique, the milled full-contour restorations are completed by applying stains and glaze materials.
Individualized characterizations and glaze can be applied either before or after Crystallization firing. Coordinated materials
are available for the different procedures.
In this way, the use of translucent IPS e.max CAD blocks permit the fabrication of very esthetic restorations on only
slightly or non-discoloured preparations with minimum effort.
Finishing
It is of critical importance to use the correct grinding instruments for finishing and adjusting IPS e.max CAD. If unsuitable
grinding instruments are used, chipping of the edges and local overheating may occur (please observe the Ivoclar Vivadent
Flow Chart ”Recommended grinding tools for PS e.max glass-ceramics”.
Observe the following procedure for finishing IPS e.max CAD restorations:
– Carry out adjustments by grinding of IPS e.max CAD restorations while they are still in their pre-crystallized (blue) state,
if possible.
– Only use suitable grinding instruments, low rpms and light pressure to prevent delamination and chipping at the edges
in particular.
– Overheating of the glass-ceramic must be avoided.
– The restorations are tried in on the dies and carefully finished.
– Check proximal and occlusal contact points.
– Surface-grind the entire occlusal surface with a fine diamond to smooth out the surface structure created by the
CAD/CAM procedure.
– Make sure that the minimum thicknesses are maintained even after the minor adjustments.
– Design surface textures.
– Always clean the restoration with ultrasound in a water bath or blast with the steam jet before crystallization.
– Make sure to thoroughly clean the restoration before further processing and to remove any residue of the milling
additive of the CAD/CAM milling unit. Residue of the milling additive remaining on the surface may result in bonding
problems and discolouration.
– Do not blast the restorations with Al
2
O
3
or glass polishing beads.
e.max
® CAD –
Staining technique
IP
S
Finish the restoration surface with suitable grinding instruments
Finish margins with suitable polishers Surface-grind the outer surface, particularly functional areas of the restoration with a fine
diamond to smooth out the surface structure created by the CAD/CAM process