Inspired by Nature...
IPS Empress is an all-ceramic crown system that gives you exceptional esthetics plus strength.
A proven ceramic alternative to metallic restorations, IPS Empress offers patient satisfaction with aesthetic, natural looking restorations, by the exclusive use of ceramic materials.
The utilization of bonded ceramic restorative materials is intended to reestablish function, shape, contour, color (hue, value and chroma), natural light transmission and strength of natural dentition.
IPS Empress is a registered trademark of Ivoclar Vivadent.
Anterior full-coverage crowns require a chamfer with 1.5-2.0 mm facial reduction, 1.0-1.5 mm lingual contact clearance, 1.5-2.0 mm incisal reduction 1.0-1.5 mm reduction at the gingival margin with rounded internal line angles; or a shoulder with 1.0 mm lingual reduction, 2.0 mm incisal reduction, 1.5 mm labial reduction, 1.0 mm 360° rounded shoulder.
Posterior full-coverage crowns require a chamfer margin with 1.5-2.0 mm occlusal reduction, 1.5 mm buccal and lingual reduction with rounded internal line angles; or a shoulder with 1.5- 2.0 mm occlusal reduction, 1.5 mm buccal and lingual reduction and 1.0-1.5 mm gingival margin reduction with rounded internal line angles.
Inlays and onlays require 1.5-2.0 mm isthmus width, 1.0-1.5 mm wide gingival floor with rounded internal line angles and butt joint margins.
Veneers require a uniform preparation and lingual reduction to increase strength. A medium-grit round-ended diamond is used to join the depth cut grooves to establish a uniform preparation and porcelain thickness of at least 1.0 mm. The diamond is angled to eliminate undercuts and establish a butt joint on the lingual aspect of the preparation. The incisal edge should be rounded to eliminate sharp line angles.
Chamfer Margins - Correct preparation of the chamfer margins interproximally allows the appropriate bulk of porcelain.
A Slice Preparation - This technique enables the ceramist to close the space and avoid unnatural lingual contours.
Variolink Veneer (Ivoclar Vivadent)
Nexus 3 (Kerr)
RelyX Veneer Cement (3M ESPE)