IPS EMPRESS IS RECOMMENDED FOR ANTERIOR SINGLE CROWNS, INLAYS, ONLAYS AND VENEERS.
BENEFITS FOR THE PATIENT
- Highly esthetic crown, inlay, onlay or veneer with excellent light transmission, which helps to blend in with the natural dentition and overcome graying at the gingival margin.
- The fit of the restoration is guaranteed through a revolutionary processing technique of pressed ceramics that adds to its durability.
- The ceramic material wears similar to natural tooth enamel.
- Non-metal substructure eliminates allergic reactions to metal and low thermal conductivity reduces sensitivity to hot or cold.
- Excellent soft tissue response and biocompatibility.
- 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 degree 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.
- Slice Preparation — This technique enables the ceramist to close the space and avoid unnatural lingual contours.