Ivoclar Vivadent IPS e.max CAD Labside - Manual (Page 59)

59
Can IPS e.max Ceram Margin materials be
used with IPS e.max CAD?
IPS e.max Ceram Margin materials must not be
used on glass-ceramics (IPS e.max Press and CAD),
since the reduction for the shoulder would
weaken the restoration.
Can IPS e.max CAD frameworks be blasted
with Al
2
O
3
or glass polishing beads before
they are veneered or after their completion
(on the cavity side)?
IPS e.max CAD restorations must never be
blasted with Al
2
O
3
or polishing beads, as this
would damage the ceramic surface and reduce
the outstanding physical properties.
How must the internal (bonding) surface
of the IPS e.max CAD restorations be
conditioned before cementation?
The internal (bonding) surfaces of IPS e.max CAD
restorations must always be etched with hydro-
fluoric acid etching gel (IPS Ceramic Etching Gel)
for 20 seconds, whether they are cemented with
adhesive, self-adhesive, or con-ventional methods.
The resulting retentive pattern enables an
enhanced bond both with adhesives and self-
adhesives as well as conventional bonding agents.
After etching, the glass-ceramics are silanized
using Monobond Plus when adhesive and self-
adhesive cementation is used. With conventional
cementation, silanizing is not necessary.
Can IPS e.max CAD restorations also be
conventionally cemented?
IPS e.max CAD restorations can be cemented
adhesively, self-adhesively or conventionally. If
the restoration is to be conventionally cemented,
however, an appropriately retentive preparation
design must be observed (preparation angle of
4°-6°). If this is not possible, adhesive luting is
preferred, e.g. Variolink ® II and Multilink ®
Automix.
It is not advisable to use classical phosphate
cements, as they would negatively influence the
light transmission of the all-ceramic and therefore
compromise the esthetic appearance of all-
ceramic restorations.