Contraindications - Dentsply Sirona Celtra Duo Mode D'emploi

Indications:
• Celtra Duo Correction porcelain is indicated
for minor repairs of Celtra Duo restorations only,
including adjustments of contacts and occlusal
surfaces.
• Dentsply Sirona Universal Stain and Overglaze are
indicated for staining and glazing Celtra Duo resto-
rations. They can also be used for staining and glazing
with most lithium silicate based restorations, zirconia
based restorations and most of the Dentsply Sirona
Porcelains.

Contraindications:

Only the indications listed above are suitable. Porcelains
other than Celtra Duo Correction Porcelain may not
have the correct coefficient of thermal expansion, and
therefore should not be used on Celtra Duo Blocks.
Warnings/Adverse Reactions:
Consult Dentsply Sirona Universal Stains and Overglaze
Safety Data Sheets (SDS) for safe handling and usage.
Use only according to the indications listed above.
Precautions:
Refer to the special notes throughout the instructions
below for best practices for using Dentsply Sirona
Universal Stains and Overglaze.
• This product is intended to be used only as specifi-
cally outlined in these Directions for Use. Any use of
this product inconsistent with the Directions for Use
is at the discretion and is the sole responsibility of the
practitioner.
Storage conditions:
Store materials in packages with the lid tightly sealed.
Do not leave open bottles where dust and debris may
contaminate the porcelain. Replace cap when not in
use. Avoid vibration and heat. Keep dry. Shake well
before use. The lot number is printed on each bottle;
please refer to the lot number in all correspondence. Do
not use after expiration date.
Crown Preparation:
• Celtra Duo restorations require adequate preparation
reduction and restoration thickness. Insufficient wall
Crown Crown Inlay Onlay
posterior anterior
1.5
1.0 – 1.5
2.0
1.5 1.5
1.5
1.5 * 1.5*
1.5* 1.5
1,5 mm
1.5 1.5
1.0 1.0
1.0
1.0
thickness may lead to premature failure.
* 1.5 - 2 mm for frameworks that are exclusively polished
• Celtra Duo restorations are designed to be polished
and/or glazed before insertion. Direct insertion
without polishing or glazing may lead to excessive
wear.
• Use only in well ventilated areas.
Finishing the restoration
Without the optional staining and/or glaze firing
1. Clean the restoration in an ultrasonic water bath or
with a steam cleaner. Carefully blow-dry the resto-
ration in an air stream.
2. Try in the final restoration to examine its fit. If neces-
sary, adjust the proximal and occlusal contacts.
3. When making adjustments to the ceramic material,
make sure to avoid overheating (e.g. by providing
irrigation). Ideally, all adjustments should be made
with water-cooled instruments.
4. Diamond polishing bodies (< 60µm) are recom-
mended for polishing the occlusal surfaces. The use
of tungsten carbide burs is not recommended.
5. Smooth the remaining surfaces of the restoration
with a rubber polisher at low speed and minimum
pressure.
6. Thoroughly clean the restoration.
7. If milled restorations require no corrections, proceed
to optional staining and glazing instructions.
8. If milled restorations require corrections, proceed
to Application of Celtra Duo Correction Porcelain
instructions.
Instructions for Application of Celtra Duo
Correction Porcelain to Celtra Duo CAD/CAM
restorations
Procedure: Mix Celtra Duo Correction Porcelain with
distilled water or Dentsply Sirona Modeling Liquid U to
desired consistency. Apply porcelain where applicable.
Fire to complete the restoration following the proce-
dures and firing programs listed below:
First Glaze & Celtra Duo Correction Porcelain on a
Crown – Apply Dentsply Sirona Universal Overglaze,
over the entire Celtra crown then apply Celtra Duo
Correction porcelain to the required areas and fire at
820°C according to 1st correction firing program a) in
Table 1. Polish to a high gloss, if needed.
Second Glaze: If after first firing the required glaze
appearance is not achieved, re-apply glaze, and fire
according to 2nd & subsequent glaze firing program in
Table 1.
Table 1. Correction/Glaze Firing
a) 1st correction
firing/
b) 2nd correction
firing
Pre-drying 2:00 min or
4:00 min
when
SuperPeg II™
used
Drying 2:00 min
1
Preheating 2:00 min
Start Temp 500°C
Veneer
Heating 55°C/min
rate
Final Temp a) 820°C
0.6
b) 810 °C
0.4
0,6 mm
Vacuum on 1:00 min
Hold time 0:30 min
Cooling 3:00 min
2
Drying time depends on the type of furnace
1
2 This cooling period of three minutes is only required
for objects placed on firing pins or when using an
auxiliary firing paste. If the object is placed directly on
firing cotton with a firing support, no cooling phase is
required.
Second Application of Glaze & Celtra Duo Correction
Porcelain (or application of Celtra Duo Correction
Porcelain after previous glazing): If a second appli-
cation is needed: apply Dentsply Sirona Universal
Overglaze, over the entire Celtra Duo crown, then apply
small amount of Celtra Duo Correction Porcelain to the
desired areas. Fire at 810°C according to 2nd correction
firing program b) in Table 1.
Note: Never fire the 2nd correction with 820 °C.
Contour the areas where Celtra Duo Correction
Porcelain was applied, if needed, and polish to a glaze
finish.
1
2nd &
subsequent
glaze firing
2:00 min or
4:00 min
when
SuperPeg II™
used
2:00 min
2:00 min
500°C
55°C/min
770°C
off
1:30 min
3:00 min