All-ceramics
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Zirconia Crowns & Bridges
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- It is not suggested to adjust the internal aspect of the zirconia. If an adjustment is required on the veneering ceramic, use a fine
diamond at low-speed with water and air to keep the ceramic from fracturing. To polish the ceramic, use a porcelain polishing
system or pink rubber wheel and diamond polishing paste (Brasseler, Shofu and Vident).
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IPS e.max® & IPS Empress®
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- IPS e.max & IPS Empress at 360 MPa has three times the strength (flexural) of original IPS Empress.
The CTE (coefficient of thermal expansion) of IPS e.max is 10.2 (100-400°C).
IPS e.max & IPS Empress has opacity of about 40 percent (or 60 percent translucency or show-through: regular Empress has an opacity of about 30 percent.
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.
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