Ivoclar Vivadent IPS e.max Clinical Guide - Manual (Page 9)

9
Thin veneer, veneer
– If possible, locate the preparation in the enamel.
– Do not locate the incisal preparation margins in the area of the abrasion surfaces or dynamic
occlusal surfaces.
– If sufficient space is available and depending on the fabrication method, you can even
leave out the preparation entirely.
Thin veneer
– Ensure that the minimum layer thickness of the thin veneer in the cervical and labial area is 0.3 mm for the
PRESS, or 0.4 mm and 0.5 mm for the CAD technique.
– Make sure that the restoration thickness at the incisal edge is 0.4 mm for the PRESS and 0.5 mm for the
CAD technique.
Veneer
– Reduce the cervical and/or labial area by 0.6 mm, and the incisal edge by at least 0.7 mm.
Starting situation Incisal orientation grooves Marginal orientation groove Central and incisal
orientation grooves
Facial preparation on
3 levels
Initial proximal
separation
Definitive proximal
preparation
Finishing and smoothing
the preparation
Practical procedure for restorations with IPS e.max | Preparation
LS
2
Thin veneer: PRESS Thin veneer: CAD Veneer: PRESS/CAD
0.3
0.3
0.4 0.5
0.5
0.4 0.6
0.7
0.6
Clinical pictures: Prof. Dr D. Edelhoff, Germany