Dentsply Sirona Celtra Ceram Mode D'emploi page 11

Full Contour Technique
Zirconia Framework
Drying
min
Glaze Firing
2:00
min
Add-on (with and
after glaze firing)
2:00
Note: 1. Slow cooling is mandatory; this includes correction firings of restorations after try-in.
2. Firing temperatures must be adapted to the number of units fired in the same cycle.
a. 5 to 9 units require an increase by 5 °C to 10 °C;
b. 10 or more units require an increase by 10 °C to 20 °C.
The values indicated here are recommended values
and serve only as a guidance. Deviations of the firing
results are possible. The firing results depend on
the respective output per oven and are due to the
manufacturer and to age. Therefore the recommended
values must be individually adapted at each firing.
Cementation
Preparation of the Celtra restoration
• Clean the restoration with a steam cleaner, in
ultrasonic bath or with alcohol.
• Apply 5 % – 9 % hydrofluoric acid etching gel
(Available separately, see manufacturer's complete
Directions for Use) to the interior of the restoration
only and allow to soak for 30 seconds.
• CAUTION: Follow manufacturer's precautions.
Do not allow tissue or eyes to come into contact
with the acid!
• Remove the hydrofluoric acid as per the
manufacturer's instructions.
• Dry the restoration in an air stream. It is recom-
mended to silanize the etched surfaces immediately.
• At chairside, apply silane only to those surfaces
required for adhesive cementing.
• Allow to soak for 60 seconds. If the silane layer
is no longer liquid, add more silane. Blow-dry in
a powerful air stream. (Recommended material:
Calibra ® Silane Coupling Agent, available
separately, see complete Directions for Use).
Start Pre- Heating
Closing
Temp heating
min °C min °C/min
2:00 400 2:00
min °C min °C/min
2:00 400 2:00
Final Vacuum Vacuum
Rate Temp Start
°C °C
55 760 0
°C °C
55 760 400
We recommend a test fire to control the oven. All
indications have been carefully elaborated and tested
by us, but they are passed on without any guarantee.
For up-to-date firing recommendations please visit
celtra-dentsplysirona.com.
Cementing
Depending on the indication for Celtra
restorations a self-adhesive or fully-adhesive
cementation can be chosen. Compatible time-proven
adhesive cementing ma terials are available as part
of the Dentsply Sirona range of products. Alter natively,
crowns and bridges can also be fixed with glass
ionomer cement. Cements are available separately.
Self–adhesive Fully adhesive Glass-ionomer
Inlays R
Onlays R
Veneers –
Crowns HR
Bridge R
R = recommended
en
Vacuum
Hold Time
Stop Hold Time
°C min min min
0 0:00 2:00 6:00
°C min min min
760 1:00 1:00 6:00
® Press
HR –
HR –
HR –
HR R
HR R
HR = highly recommended
Cool
9