Ivoclar-vivadent IPS e.max CAD-on User Manual Page 18

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18
Layer Thicknesses
The restoration design  is key to the success of durable all-ceramic restorations.  
The more attention  given to the design, the better the final results and the clinical success will  turn out to be. The 
following basic guidelines have to be  observed:
–  The restoration design generated by the software may need to be individually adapted according to the clinical require-
ments using the design tools. 
–  In the case of bridges, a sufficient penetration of the individual bridge elements must be ensured in order to  observe the 
minimum connector dimensions in the IPS  e.max CAD-on restoration. 
–  During the construction of an IPS e.max CAD-on restoration, the separation into IPS e.max ZirCAD frame-
work and the IPS e.max CAD veneering structure is carried out by the software after the design of an ana-
tomical shape.
–  If changes are made to the framework during construction in the milling preview, make sure that no undercuts are created. 
Otherwise, the IPS e.max CAD veneering  structure may not be placed on the framework.
–  After the milling process, only the attachment point to the  block may be smoothed out on the IPS e.max ZirCAD frame-
work. Further processing  is not possible, as this would influence the size of the fusion joint.
The following minimum layer thicknesses are stored in the software and must be observed. Please refer to the
indications (see page 8) for information on the possible restorations.
Crowns Splinted
crowns
3-unit posterior
bridges
4-unit posterior
bridges
(2 connected bridge pontics
at most)
IPS e.max IPS e.max CAD
veneering structure
minimum layer thickness
circular
0.7 0.7 0.7 0.7
occlusal
0.7 0.7 0.7 0.7
IPS e.max ZirCAD
framework minimum layer
thickness
circular
0.5 0.5 0.5 0.5
occlusal
0.5 0.5 0.5 0.7
Connector dimensions 
9 mm
2
12 mm
2
Dimensions in mm
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