Ivoclar Vivadent IPS e.max CAD-on - Manual (Page 29)

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Completing the IPS e.max CAD Veneering Structure
Note: For detailed information on the processing of IPS e.max CAD please refer to the IPS e.max CAD
Instructions for Use.
Completing
the
IPS
e.max
CAD
V
eneering
structur
e
I N S T R U C T I O N S F O R U S E
CAD
L A BSIDE
all ceramic
all you need
Finishing
Fitting
to the framework
Checking
Occlusion, articulation,
contact points
Finishing, adjusting, checking
It is of critical importance to use suitable instruments for finishing 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").
Carry out adjustments by grinding of IPS e.max CAD veneering structures while they are still in their pre-crystallized (blue)
state, if possible.
– Only use suitable grinding instruments, low speed and light pressure to prevent delamination and chipping at the
margins in particular.
– Overheating of the glass-ceramic must be avoided.
Observe the following procedure for finishing IPS e.max CAD veneering structures:
– Carefully separate the IPS e.max CAD veneering structure from the block using a diamond-coated separating disk.
– Place the IPS e.max CAD veneering structure on the sintered IPS e.max ZirCAD framework and check the fit. The
IPS e.max CAD veneering structure must touch the entire circular collar of the bridge abutment or the crown framework.
– If corrections are required to adjust the IPS e.max CAD veneering structure to the IPS e.max ZirCAD framework, always
carry out the corrections on the IPS e.max CAD veneering structure.
− The IPS e.max ZirCAD framework and the IPS e.max CAD veneering structure must touch each other only at the
cervical collar, in order to ensure a correct subsequent fusion with the IPS e.max CAD Crystall./Connect fusion glass-
ceramic.
− In the case of bridges, IPS e.max CAD veneering structure and the IPS e.max ZirCAD framework must not touch each
other in the basal pontic area. Adjust by grinding, if necessary.
– Finish the outer aspects of the IPS e.max CAD veneering structure with rubber polishers. The veneering structure can be
placed on the IPS e.max ZirCAD framework in order to prevent excessive reduction.
– Do not separate the interdental space with separating disks. The interdental space can be adjusted with fine,
tapered diamond burs or diamond-coated rubber wheels. "V-shaped" cuts have to be avoided.
– Carefully smooth out the attachment point on the restoration. Pay attention to the proximal contact.
– Place the restoration (IPS e.max ZirCAD framework with IPS e.max CAD veneering structure in place) on the model.
Check occlusal contact points and articulation in the articulator. Carry out individual corrections, if required.
– Surface-grind the entire occlusal surface of the IPS e.max CAD veneering structure with a fine diamond to smooth out
the surface structure created by the CAD/CAM procedure.
– Make sure that the minimum layer thicknesses are observed.
– Design surface textures.
– Clean the IPS e.max ZirCAD framework and the IPS e.max CAD veneering structure with ultrasound in a water bath or
blast with the steam jet before further processing.
– 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 restorations with Al
2
O
3
or glass polishing beads!