Ivoclar Vivadent IPS Empress Esthetic - Manual (Page 18)

18
Full crown
Anterior and posterior crown
The anatomical shape is evenly reduced while observing the given minimum thicknesses. A circumferential shoulder is
prepared with rounded inner edges or a chamfer. The width of the circular shoulder or chamfer should be ≥ 1 mm. The
incisal/occlusal third of the crown is reduced by approximately 1.5 mm. The incisal or occlusal part should be reduced by
approximately 2 mm.
Veneer
If possible, the preparation should be entirely located in the enamel, either without involving reduction of the incisal edge
or traditional preparation involving reduction of the incisal edge. The incisal preparation margins should not be located in
the area of the abrasion surfaces.
The extent of the incisal reduction depends on the desired translucency of the incisal area to be built up. The more
transparent the incisal edge of the intended veneer, the more pronounced the reduction should be. The incisal edge must
be reduced by at least 1 mm. By preparing orientation grooves using a depth marker, controlled enamel reduction can be
achieved. The minimum preparation thickness is ≥ 0.6 - 1 mm, depending on the preparation technique selected.
Dissolution of the proximal contacts is not required. Discoloured teeth may require more preparation. In the cervical area,
prepare a chamfer.
OR
Dimensions in mm
Dimensions in mm