Ivoclar Vivadent IPS d.SIGN - Manual (Page 47)

47
After the try-in of a restoration, minor shape adjustments,
e.g. contact points, tissue side of pontic, shoulder
adjustments, may be necessary. There are two add-on
materials to meet different requirements:
– IPS d.SIGN Margin Add-On material
– IPS d.SIGN Add-On material
1. Shoulder adjustment with IPS d.SIGN Margin Add-On
To make adjustments to the shoulder porcelain, the
IPS d.SIGN Margin add-on materials is available. It is slightly
shaded and, depending on the application, can be fired
using the same parameters as those used for glaze firing
(with or without glazing material).
Before the final adjustments to the porcelain shoulder are
applied, isolate the gypsum die with IPS d.SIGN Margin
separating liquid and IPS d.SIGN Ceramic separating liquid.
Depending on the individual preference, IPS d.SIGN Margin
add-on can be processed using two different methods:
Method 1
– Mix IPS d.SIGN Margin Add-On with the IPS d.SIGN Margin
material in a 1:1 ratio and then mix with IPS d.SIGN
Margin build-up liquid. Make the necessary adjustments to
the porcelain shoulder and then fire the restoration using
the same firing parameters as those used for glaze firing
without glazing material.
Firing parameters for corrective firing with IPS d.SIGN
Margin Add-on (1:1) (glaze firing without glazing material)
T
870°C
1598°F
B
403°C
757°F
S
4 min.
4 min.
t
60°C
108°F
H
0.5–1 min.
0.5–1 min
V
1
450°C
842°F
V
2
869°C
1596°F
➚
Firing parameters for corrective firing with IPS d.SIGN
Margin Add-on (alone) (glaze firing with glazing material)
T
830°C
1526°F
B
403°C
757°F
S
4 min.
4 min.
t
60°C
108°F
H
1–2 min.
1–2 min.
V
1
450°C
842°F
V
2
829°C
1524°F
➚
Method 2
– Mix IPS d.SIGN Margin Add-on (alone) with IPS d.SIGN
Margin build-up liquid and make the necessary
adjustments to the porcelain shoulder. After that, fire the
restoration using the same firing parameters as those used
for glaze firing with glazing material.
2. Corrective firing with IPS d.SIGN Add-On material
For any necessary corrective firing, e.g. contact areas or
tissue side of pontic , IPS d.SIGN Add-on is available. This
low firing add-on material demonstrates medium incisal
opacity. Depending on your preference, you may chose
between two different methods when working with
IPS d.SIGN Add-on material.
Method 1 (dentin/incisal adjustments)
– Mix IPS d.SIGN Add-on material with any dentin or incisal
material in a 1:1 ratio and then mix with the desired build-
up liquid. Make adjustments and fire.
Firing parameters for the corrective firing with
IPS d.SIGN Add-on material (1:1)
T
810°C
1490°F
B
403°C
757°F
S
4 min.
4 min.
t
60°C
108°F
H
1 min.
1 min.
V
1
450°C
842°F
V
2
809°C
1488°F
➚
Method 2 (contact areas)
– Mix IPS d.SIGN Add-on material with the desired build-up
liquid. Make adjustments and fire.
Firing parameters for the corrective firing with IPS
d.SIGN Add-on material (alone)
T
750°C
1382°F
B
403°C
757°F
S
4 min.
4 min.
t
60°C
108°F
H
1 min.
1 min.
V
1
450°C
842°F
V
2
749°C
1380°F
➚
Important
If furnaces of other manufacturers are used, these
parameters have to be adjusted accordingly.
d.SIGN – Corrective firings
(Add-On)
After corrective firing, especially those involving
large adjustments, the restorations will have to be
polished with suitable rubber polishers.
IP
S