Ivoclar Vivadent IPS d.SIGN - Manual (Page 36)

Any necessary adjustments of the ceramic shoulder
may be carried out using IPS d.SIGN Margin Add-
On material. The use of this material is explained
under 'Corrective Firing' on page 47.
36
2 nd shoulder firing
After the firing, the shoulder may have to be slightly adjusted
by grinding. The accuracy of fit (sinter shrinkage) has to be
reestablished by means of a 2nd shoulder firing. Use the
same Margin materials as for the 1st shoulder firing for that
purpose. First, however, isolate the die again with
IPS Ceramic Separating Liquid. Then, supplement the missing
areas by carefully applying the shoulder material in the space
resulting from the 1
st shoulder firing, thus providing
optimum accuracy of fit of the ceramic shoulder. After that,
complete the shoulder, dry, carefully remove the framework
from the die, and place it on the firing tray.
Apply the shoulder material ...
... to reestablish the cervical accuracy of fit of the shoulder.
The restoration is fired using the firing parameters for the 2 nd shoulder firing.
Framework with fired ceramic shoulder.
Framework with applied and dried shoulder material.
Firing parameters for the 2 nd shoulder firing
T
890°C
1634°F
B
403°C
757°F
S
6 min.
6 min.
t
60°C
108°F
H
1 min.
1 min.
V
1
450°C
842°F
V
2
889°C
1632°F
➚
Important
If furnaces of other manufacturers are used, these
parameters have to be adjusted accordingly.