Ivoclar Vivadent IPS e.max Press Abutment Solutions v.2 - Manual (Page 23)

23
Application
procedure
­–
­Fabrication
­Hybrid
­Abutment
­and
­Hybrid
­Abutment
­Cr
own
Finishing­
It is of critical importance to use the correct grinding instruments for finishing and adjusting high-strength glass-ceramics
(please refer to the Ivoclar Vivadent Flow Chart "Recommended grinding instruments for glass-ceramics"). If unsuitable
grinding instruments are used, chipping of the edges and local overheating may occur.
Observe the following procedure for finishing IPS e.max Press restorations:
– Adjustment by grinding of pressed IPS e.max Press restorations should be kept to a minimum.
– Overheating of the ceramic must be avoided. Low speed and light pressure is recommended.
– Make sure that the minimum thicknesses are maintained even after the minor adjustments.
Fitting­to­the­Ti­base
The fit of the abutment or abutment crown is checked on the Ti base before the sprue is separated.
– Before the object is fitted, the inner aspect of the object (screw channel) is checked for bubbles in the ceramic. If
required, the bubbles are removed with suitable instruments.
– Carefully position the abutment or abutment crown on the Ti base. Note: Apply only light pressure to secure the pressed
object on the Ti base in order to prevent chipping of the ceramic. Observe the position of the rotation lock.
– Possible rough spots interfering with the fit of the pressed object on the Ti base cause greyish-black markings on the
screw channel. Carefully remove such markings with suitable grinding instruments. The diameter of the grinding
instrument must be smaller than that of the screw channel. As an alternative to marking the rough spots, an occlusion
spray can also be used.
– Carefully remove possible rough spots until an optimum fit between the Ti base and the pressed object is achieved.
Repeat the procedure, if required.
Check the screw channel for bubbles ...
Possible rough spots interfering with the fit on the Ti Base cause stains on the screw
channel of the pressed object, ...
Carefully position the abutment or abutment crown on the Ti base.
... which can be carefully removed by means suitable grinding tools.