Dentsply Sirona Celtra Ceram Mode D'emploi page 14

Helpful Tips:
• T o avoid tensions in the Celtra Ceram veneering ceramic, it is necessary
to round off any sharp corners and edges of the frame.
• I rrigation will generally not be required when working on the material
with diamond cutters.
• W ater cooling is recommended when using high-speed rotary instruments.
• T o avoid overheating of the framework material, do not use a high
grinding pressure.
Composite dies
The Dentsply Sirona Die Material is designed to mimic the actual shade of the
patient's prepared tooth. When this material is placed inside the pressed Celtra
crown, it will assist in accurate shade reproductions.
The dentist should take a prep shade of the tooth being restored for the
laboratories reference with the Dentsply Sirona Prep Guide.
If the dentist did not take the shade of the prepared tooth, the composite die
material guide below may be used to verify the final shade. Select the proper
composite die material from the appropriate table.
1) Apply the Dentsply Sirona Prosthetics Die Release to the inside of the
ceramic restoration and allow it to dry.
2) Place Dentsply Sirona Die Release in the inside of the restoration, then,
a small amount of the Dentsply Sirona composite die material on the inside
of the restoration. Pack the material to remove any voids. Immediately push
a dowel pin into the uncured composite die material. Remove any excess
composite from the margin area.
3) Light cure the composite for 1-2 minutes using a hand held light curing unit
or the Triad 2000 curing unit from Dentsply Sirona.
4) Remove the composite die material from the restoration and carefully
clean it using a steam cleaner or in distilled water in an ultrasonic cleaner
for 10 minutes.
Due to the high translucency of Celtra Press, the influence of the die shade on
the shade of the restoration must be taken into account. The aesthetic result
is also influenced by the color of the adhesive material. Using the supplied
light-curing die material, the dental technician has the ability to map the shade
information supplied by the dentist to a control die to replicate information
about the oral situation in the shade reproduction. The aim is to simulate the
shade of the prepared tooth (follow the working instructions).
Shade
A1 A2
Die Shade F1 F12
A3 A.5 A4 B1
F10 F9 F7 F1
B2 B3 B4 C1
F11 F10 F8 F3
9
C2 C3 C4 D2
F4 F5 F6 F2
D3 D4
F3 F3