Dentsply Sirona Celtra Ceram Mode D'emploi page 8

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 com-
posite 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 com-
posite die material. Remove any excess composite
from the margin area.
Shade A1
Die Shade F1
Celtra Ceram processing
®
Note: When firing a Celtra
ration it is important to use only ceramic /porcelain
type pins/pegs or to place the object directly on the
firing pad, to prevent issues with Celtra
porcelain and glaze firings. When other than recom-
mended 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.
6
A2 A3 A.5 A4 B1
F12 F10 F9 F7 F1
® Press All-Ceramic resto-
® Press during
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 influ-
ence 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).
B2 B3 B4 C1 C2
F11 F10 F8 F3 F4
C3 C4 D2 D3 D4
F5 F6 F2 F3 F3