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IPS e.max®

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TECHNICAL NOTES
If you are a CEREC customer and would like to learn more about how to upload your CEREC file through My Account, click here for instructions.
If adjustment is required on the ceramic, ALWAYS CEMENT OR BOND INTO PLACE BEFORE PROCEEDING, then use a fine diamond with water to keep the crown cool. To contour the crown, polish with a porcelain polishing wheel ( Brassler, Shofu and Vident) and diamond polishing paste.
Caution: Do NOT attempt to fire porcelain. IPS e.max ceramic requires specific stains and glaze, as well as precisely calibrated ovens at specific temperatures and vacuum settings.
For best results, return crown for re-glaze firing to lab.
INDICATIONS / CONTRAINDICATIONS
IPS e.max CAD is indicated for full anterior or posterior crowns. IPS e.max press is indicated for full anterior or posterior crowns and three-unit bridges having only one pontic with the second bicuspid as the most distal abutment. Veneers can also be indicated and are recommended when combining with adjacent IPS e.max crowns or bridges, provided ample reduction is achieved. Otherwise, original IPS Empress or IPS e.max CAD would be indicated for veneers, inlays and onlays.
IPS e.max should not be used on patients with malfunctional occlusion such as bruxers or clenchers. IPS e.max should not be used as abutments for cast partials. IPS e.max should not be used in situations when preparation requirements cannot be achieved. IPS e.max is not indicated for Maryland-type bridges.
PREPARATION
Anterior full-coverage crowns require a chamfer or shoulder margin. A circular shoulder is prepared with rounded inner edges or a chamfer at an angle of 10-30°: the width of the shoulder/chamfer is approx. 1 mm. Facial reduction is 1.5 - 2 mm; 1 - 1.5 mm lingual contact clearance. Incisal reduction is 1.5 - 2 mm with rounded internal line angles, and an incisal edge at least 1mm wide to permit optimum milling of the incisal edge during CAD/CAM processing.
v Posterior full-coverage crown requires a chamfer or shoulder margin. A circular shoulder is prepared with rounded inner edges or a chamfer at an angle of 10-30°: the width of the shoulder/chamfer is approx. 1 mm. Occlusal reduction is 1.5 - 2 mm: axial reduction (buccal, lingual and interproximal) is 1.5 mm with rounded internal line angles.
CEMENTATION
For greatest strength, and where preparation allows for dry field (supra-gingiva margins), it is recommended to use adhesive bonding, such as VarioLink II (Ivoclar Vivadent) or similar dual cure materials (Insure, Cosmedent; Nexus, Kerr; Choice, Bisco, Inc.; Lute-It, Pentron).
For areas subgingival, or when a dry field cannot be achieved, Ivoclar Vivadent recommends a hybrid glass ionomer cement system with less than 0.5 percent expansion. (NOTE: Resin-reinforced glass ionomers (Advance, Vitremer) are not indicated for any all-ceramic restoration.)
Below is a list of recommended resin cements:
Vivaglass (Ivoclar Vivadent)
GC Fuji (GC America)
Ketec Cem (3M ESPE)
Panavia F (J. Morita)
C&B Metabond
Variolink (Ivoclar Vivadent)
WORKING TIME
5 Days In-lab
Rush Cases : All rush cases must be prescheduled by calling 800-944-7874 before the case is shipped. Time of pickup and delivery may affect turnaround time.
CODES
D2740 Crown
D2610 Inlay for 1 surface
D2620 Inlay for 2 surfaces
D2630 Inlay for 3 surfaces
D2962 Labial Veneer
D2783 Crown 3/4 Porcelain Ceramic (does not include veneers)
D6245 Pontic Porcelain/Ceramic
 
 
   
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