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What preparation requirements should I follow for a zRc crown?

Parameter Requirement
Marginal reduction Minimum 0.8 mm
Occlusal clearance Minimum 1.5 mm

The preparation geometry is critical: it must provide stability and allow the crown to seat in only one correct position, preventing the crown from rocking or seating incorrectly. Keep margins clean and dry throughout — blood or fluid at the margin during scanning produces inaccurate digital impressions and can lead to open or short margins on the final restoration.

For non-retentive or limited-clearance preparations, plan for bonding rather than conventional cementation (see Q6).

 

Additional Resources

For more information concerning the zRc Zirconia:

Contact Information

For help with a Locator Fixed solution for your next case, contact ROE Dental Laboratory: