Helpful Tips - Dentsply Sirona Celtra Ceram Mode D'emploi

Framework preparation
Zirconia
For more detailed information regarding fabrication
of Cercon and other compatible frameworks, please
consult the Cercon Directions for Use (DFU).
Celtra Press – minimum framework wall thickness / veneer thickness (mm)*
Technology Area
Framework
Staining wall thickness
technique (fully
contoured)
Framework
wall thickness
Cut-back
Veneering (thickness)
Framework
wall thickness
Layering
technique
Veneering (thickness)
*Connector for 3-unit bridge should have a minimum of a cross-sectional area of 16 mm
** For other Lithium Disilicate frameworks use the appropriate recommendations for minimum wall thickness/veneer thickness (mm),
as per the applicable DFUs.
PowerFire (Celtra Press frameworks only)
Use 50-micron sized aluminum oxide at 20 psi
pressure and lightly blast the exterior surface of the
ceramic restoration. Care must be taken not to harm
the margins.
Use a steam cleaner to clean the surfaces or put the
restoration in distilled water and place in an ultrasonic
cleaner for 10 minutes.
PowerFire is a firing program that is carried out
before the first ceramic firing of the veneering porce-
lain. PowerFire increases the flexural strength of the
Celtra Press restoration to >500 MPa. After PowerFire,
a blasting must be avoided as it will reduce the
strength of the restoration.
Inlays
1.0
Full-arch ≥ isthmus
width
incisal/occlusal 1.5
Full-arch –
incisal/occlusal –
–
full-arch/incisal/
–
occlusal
–
Celtra Press
Celtra Press frameworks should be pressed in
anatomical form to support the ceramic being applied
to ensure an even layered thickness of the veneering
material. Fine corrections, e.g. adjustment in the
marginal area, are carried out by using fine diamonds
or silicone wheels.
Onlays /
Anterior
Table- Veneers
crowns
tops
1.5 0.6 1.2
1.5 0.6 1.5
– 0.6 1.2
– 0.4 0.8
– 0.4 0.7
– – 0.8
– – 0.4 - 0.7
2

Helpful Tips:

• To avoid tensions in the Celtra Ceram
veneering ceramic, it is necessary to round off
any sharp corners and edges of the frame.
• Irrigation will generally not be required when
working on the material with diamond cutters.
• Water cooling is recommended when using
high-speed rotary instruments.
• To avoid overheating of the framework material,
do not use a high grinding pressure.
en
Anterior Posterior
Poste-
bridges bridges
rior
Connector cross-section
crowns
16 mm²
1.5 1.2 1.5
1.5 1.5 1.5
1.5 1.2 1.5
0.8 0.8 0.8
0.7 0.7 0.7
0.8 0.8 0.8
0.7 0.7 0.7
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