Ivoclar Vivadent IPS e.max ZirPress User Manual
Page 14
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Preparation of the IPS e.max ZirCAD framework (after sintering)
Adjustments of sintered IPS ZirCAD frameworks should be kept to a minimum (fine adjustment of the edges).
− For the selection of the grinding instruments, please refer to the Ivoclar Vivadent Flow Chart ”Recommended grinding
tools for IPS e.max zirconium oxide”.
− Finishing is carried out at low pressure, since too much pressure may result marginal chipping and local phase transition.
− Place IPS e.max ZirCAD framework on the model, check fit and make slight adjustments, if necessary.
− Do not ”post-separate” the bridge framework with separating disks after sintering. This may result in undesired pre-
determined breaking points, which will subsequently compromise the stability of the all-ceramic restoration.
− Check marginal areas and slightly finish, if necessary.
− For the fabrication of a pressed shoulder, the edges may be reduced up to the inner edge of the chamfer or shoulder
preparation.
− Make sure that the minimum thicknesses are maintained even after the minor adjustments.
− Before veneering, clean the framework with running water or the steam jet and dry.
− Do not blast the framework with Al
2
O
3
or glass polishing beads, since this may damage the surface.
Use the grinding instruments specifically developed for ZrO
2
to carry out the required
adjustments.
Completely sintered and finished IPS e.max ZirCAD framework.