Dentsply Sirona Celtra Ceram Mode D'emploi page 9

Framework-porcelain ratio standards* for Celtra Press restorations.
Overall thickness of
restoration (mm)
Minimum framework
thickness (mm)
Maximum layer porcelain
thickness (mm)
*The strength of the veneering must not exceed 2.0 mm at any point.
• The minimum framework wall thickness will always be based on the total thickness of the restoration.
• The thickness ratio of the framework wall to the ceramic layer must be at least 1 : 1 to ensure framework
stability and esthetics.
Cut-back Technique
The cut-back framework is complemented in the
incisal or occlusal areas using incisal materials.
This produces high-quality esthetic restorations in
only a few steps. The exact tooth shade is ensured
after applying the incisal material.
Additional dentine materials need not be applied to
Celtra Press restorations.
Layering Technique
By applying the individual layering technique, one can
use the broad range of dentin and enamel powders
b , c , d , j & k giving you the ability to create
natural and highly sophisticated restorations.
If the structure requires dentin proceed with the build-
up, aesthetic effects can be achieved in the enamel
area using enamel opal e
c d j
effect powders , ,
occlusal fossa and body areas use EE1 Sunrise
& m or EE3 Sunset to enhance chromatic effects.
Opal effect powders can be applied as an overlay
or as needed e , k & o
dualization effects.
Three unt bridge after first firing
Veneer
0.8 1.0 1.1
0.4 0.5
0.6
0.4 0.5 0.5
, k & o and enamel
k
& . For cervical,
g
to further enhance indivi-
p .
Crown & Bridges including 2
1.2 1.5 1.7
0.8 0.8 0.9
0.4 0.7 0.8
Staining / Overglazing
The Dentsply Sirona Universal Stain and Glaze system
(available separately) is recommended for finishing
full contour and veneered restorations. This system is
especially matched to the Celtra Press framework and
Celtra Ceram veneering system.
Place a small amount of the enamel stain or glaze on
the palette. If necessary, mix the stain and glaze with
the Dentsply Sirona Stain and Glaze Liquid to achieve
a creamy consistency and apply the mixture to the
porcelain surface.
Additional Universal Stains may be applied for
individual characterizations
Remove the die material from the restoration.
To ensure proper fit, remove excess glaze from
the interior of the crown as well as the internal
margin areas.
Fire the crown according to recommended firing
cycles s .
Note: For best results, be sure to mix thoroughly
the stain and overglaze prior to use. The pigment
and liquid can sometimes become separated inside
the jar over time.
Note: If a higher sheen is desirable, either raise
the high firing temperature 10˚C or use an additional
30 second hold time at the high temperature.
en
nd premolar
2.0 2.2 2.4 2.8
1.1 1.2 1.3 1.5
0.9 1.0 1.1 1.3
q & r .
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