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Celtra
Ceram processing
®
Note: When firing a Celtra
only ceramic /porcelain type pins/pegs or to place the object directly on the
firing pad, to prevent issues with Celtra
When other than recommended type of pins/pegs are used, while initial results
with some firing pins may appear acceptable, internal stress can compromise
long term success. Do not fill the entire restoration with refractory putty. Doing
so could cause cracking of restoration.
Framework-porcelain ratio standards* for Celtra Press restorations.
Overall thickness of
restoration (mm)
Minimum framework
thickness (mm)
Maximum layer porcelain
thickness (mm)
*The strengthc 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 dentin materials need not be applied to Celtra Press restorations.
Press All-Ceramic restoration it is important to use
®
®
Veneer
0.8
1.0
1.1
0.4
0.5
0.6
0.4
0.5
0.5
10
Press during porcelain and glaze firings.
Crown & Bridges including 2nd premolar
1.2
1.5
1.7
0.8
0.8
0.9
0.4
0.7
0.8
2.0
2.2
2.4
1.1
1.2
1.3
0.9
1.0
1.1
2.8
1.5
1.3
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