Dentsply Sirona Cercon ht Instrucciones De Uso página 69

Separating
Notes on separating the objects:
Separate the objects from the disk by sandblasting with aluminium oxide (50 μm, max. 1.5 bar). The sandblasting
aid facilitates the removal of objects from the blank. It helps prevent framework fracture or other damage to the
objects. For large-span bridges (9 units or more), separate only the labial and buccal sprues of the objects and
the "tongue" connector, because the objects must be sintered together with that "tongue". Any protruding
ridges at the bottom of the "tongue" must be removed in order to assure that the objects will stay firmly put
on the sintering tray. The smaller objects nested inside the "tongue" are detached completely and sintered
separately.
Sandblasting aid
Sintering
Sintering in the Cercon heat plus P8:
• 1 500 °C in the Cercon heat plus P8
– Program #4 for bridges up to 8 units, T
– Program #5 for bridges of 9 units or more, T
Special sintering notes for large-span bridges (9 units or more)
Two wide-span bridges (9 or more units) can be sintered in the Cercon heat plus P8 at one time. Place the
objects on the sintering block with due regard to the internal vertical clearance of the Cercon heat plus P8
(130 mm) and the need to facilitate contraction without any mechanical constraints. The objects must not
touch the sintering block during the sintering.
Sintertray with sintering block
Cercon® ht Instructions for Use
Milling and sandblasting the object
= 1 500 °C
max
Correct position on the sintering tray
= 1 500 °C
max
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