The E-Max crown is a type of all-ceramic crown which is preferred for its longer lasting, aesthetic qualities. This crown and the Zirconia crown are worn due to their highly attractive appearance which ensures that they compliment the rest of your teeth.
It is considered a good option for damaged, stained or poor quality teeth.
WHAT IS AN E-MAX CROWN?
This is a type of all-ceramic crown with an appealing translucent color which is combined with extra strength and durability.
This crown is made from a single block of lithium disilicate ceramic: this is a top grade material which has been harvested for its toughness, durability and opaque qualities which makes it a highly prized crown.
Plus it is considered a breakthrough in dental crown technology.
You get a glass ceramic crown which is tough and enduring but delicate in appearance.
ADVANTAGES OF AN E-MAX CROWN
This crown is considered to be the best match with your own natural teeth. The transparent color and lifelike shape ensures that it is unlikely to be noticed among your own natural teeth.
There is no metal alloy base with this crown which means no unsightly looking grey line around the gum line.
They are strong, long lasting and unlikely to crack or fracture as compared to many other types of crowns.
They are considered to be at less risk of chipping compared to Zirconia crowns.
IPS E.MAX VENEERS
IPS Empress is ideal for maximizing the esthetics of crowns, veneers, inlays and onlays. The use of traditional lost wax techniques and the IPS Empress pressing procedure results in outstanding marginal accuracy. With no metal substructure or core material, the light refraction and reflection of IPS Empress more closely mimic that of natural tooth structure.
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.