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General preparation information
Preparation of pre-molars and molars
For posterior teeth a simplified occlusal relief should be prepared to provide more space for the ceramic. In the occlusal area at least 1.5 mm of substance should be removed.
A feather edge margin is not recommended, as it does not provide adequate reduction for the porcelain buildup.
cementation with glass ionomer or zinc phosphate cements or adhesive bonding with the self-
Pretreatment of the zirconium doxide restorations prior to adhesive fixation:
Removal of integrated restorations
In the event of a crown having to be removed it is recommended to use a cylindrical diamond instrument at a speed of 120,000 rpm while ensuring maximum cooling with water.