Dentsply Sirona Cercon ht Instrucciones De Uso página 68

Nesting
Special nesting notes for large-span bridges (9 units or more)
For distortion-free sintering of long-span bridges (9 units or more) when nesting the object in a Cercon ht 98 disk,
make sure to add a sintering reinforcement in the form of a "tongue" to create.
Always place objects (single copings, three-unit frameworks) within the sintering reinforcement ("tongue") in
order to achieve a homogeneous shrinkage of large-span objects during sintering.
Entering the shrinkage factor for the milling unit:
In CAM software allowing the entry of 3 dimensions, enter X, Y and Z values.
In CAM software allowing the entry of 2 dimensions, enter X, Y or Z values.
In CAM software allowing the entry of 1 dimension, enter the X value.
Finishing
Special notes on finishing:
Please read the respective Instructions for Use for your device regarding further processing.
We recommend the following milling strategies for secure processing:
Procedure
Contour rough-
machining,
occlusal side (OS)
Contour rough
machining,
cavity side (CS)
Pre-finishing (CS)
Pre-finishing (OS)
Finishing (OS)
Finishing without
cavity (CS)
Finishing cavities
Fissures
The milling strategies are recommendations. If necessary, carry out trial millings and adapt the parameters as needed.
64
Tool, Feed
spherical rate Z
mm/min
HM Ø2 800
HM Ø2 800
HM Ø2 400
HM Ø2 400
HM Ø 1 400
HM Ø 1 400
HM Ø 1 250
HM Ø 0,5-0,6 250
Feed Speed a
rate F rpm mm
mm/min
1 800 22 000 0.8
1 800 22 000 0.8
1 200 22 000
1 200 22 000
1 200 27 000
1 200 27 000
1 000 27 000
1 000 35 000
a Strategy
p e
mm
1 Contour-parallel
rough-machining
1 Contour-parallel
rough-machining
0.2 Residue material
rough-machining
0.2 Residue material
rough-machining
0.15 3D offset
0.15 3D offset from
inside
0.1 3D offset
0.1 Partial finishing,
3D
Cercon® ht Instructions for Use
Dimen-
sion
0.3
0.3
0.1
0.1
0
0
0
0