Processing Instructions

GLAZING
AND STAINING
TECHNIQUE
overglaze in jar thoroughly
2 Mix
with a spatula if separation
is seen.
applying the stain and
1 Before
overglaze material, remove all dirt
desired amount of
3 Remove
CELTRA overglaze paste
a different consistency is
4 Ifdesired,
adjust the consistency
a thin layer of the
5 Apply
overglaze material all over the
customization is needed, take
6 Ifa little
of the corresponding
8
and grease from the restoration.
crown surfaces using a staining
brush. Make sure not to apply
the overglaze material either in
too thick or too thin of a layer.
A thin layer will result in a matte
finish. A thick layer can result in
puddling or pooling of the stain.
crowns directly on
9 Position
the ceramic honeycomb
tray or firing cotton and
fire according to the firing
instructions.
from jar to tray.
body and incisal stains and
position it on the tray.
by diluting the material with
Stain and Glaze liquid.
Anterior and Bicuspid frameworks
should be slightly filled with
Super Peg II and a looped pin
must be placed to prevent unit
from falling.
if needed and apply on
7 Dilute
the crown.
After the first firing, if the
consistency of the overglaze
was too thin, the restoration may
come out under-glazed. If that
is the case, apply a thin layer of
the CELTRA overglaze material
all over the crown surface using
a brush. Once the overglaze is
applied, conduct the second stain
and overglaze firing procedure
according to the firing schedule.
POLISHING
TECHNIQUE
Start with a Diamond:
Rubber Porcelain Polishers:
1
1
Use a medium grit rubber wheel
of your choice.
2
For the occlusal surface, use a
point shape. An electric handpiece
should run at 10,000 RPM to a
maximum of 15,000 RPM, with
only light pressure used. Electric
handpieces have constant torque
even at a slow speed, so they are
more effective than air driven
handpieces. Begin the process
with the medium shine wheel.
Use a fine grit diamond in a
friction grip slow speed handpiece
ONLY to remove the excess from
the mill. An electric handpiece is
more effective than one that is
air driven.
the handpiece at a low speed
2 Run
max 15,000 RPM. Avoid a high-speed
handpiece because it will create
excessive heat and trauma to
the ceramic.
3
Next, use the fine grit rubber wheel
and/or point shape with the same
technique as described above.
4 Finish with the fine grit rubber wheel.
5
For an effective high shine, use
polishing paste. Polishing paste
should be used with a bristle
brush wheel in a slow speed latch
handpiece. This is very effective
for polishing grooves in the
posterior anatomy.
THE DOs AND DON’Ts
DO
DON’T
Always position crowns on a ceramic
honeycomb tray. As an alternative
option, a firing pad can be used.
Do not add thinner inside
the overglaze jar, always
place it on the tray/glass
slab in order to dilute to
the right consistency.
Note: To decrease/eliminate the imprint
that the firing pad may leave on the
restoration, use a metal mesh firing pad.
Do not use water
to clean the brush.
Water should never
be incorporated in
any stains or glaze.
Use thinner to clean
the brush between
different shades.
If you use metal pins to support the CELTRA
restoration, use a loop pin with Super Peg II
to prevent the unit from falling and fracturing.
Always use the exact manufacturing
firing instructions.
Don’t accelerate
cool down, and
be sure to use
Super Peg II,
not Object Fix®.
If you must use refractory material,
use Super Peg II.
Restoration must cool on tray for
2 minutes post firing.
CELTRA DUO FIRING SCHEDULES
Initial Stain & Glaze
DENTSPLY Paint-On Glaze
C
F
Initial Stain & Glaze Indenco
Spray-On Glaze
C
F
Add-On/Stain/Correction
Paint-On or Spray-On Glaze
C
F
Initial Stain & Glaze
0
0
0
0
0
0
Preheat/Low Temp.
Closing Time
Heat Rate Increase
High Temp.
Hold Time
Cooling Time/Temp.
500
3:30
55
820
1:30
3:00/750
923
3:30
131
1508
1:30
3:00/1382
500
1:00
55
820
1:30
3:00/750
923
1:00
131
1508
1:30
3:00/1382
500
2:00
55
770
1:30
3:00/700
923
2:00
131
1418
1:30
3:00/1292
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