Cementation of a zirconia restoration

Deciding whether to bond or cement a restoration involves weighing clinical factors analytically while also relying on the insights gained through experience and tactile feedback.

After removing the provisional, clean off the temporary cement and try in the new crown. Ensure that:

• The interproximal contacts are ideal.
• The marginal fit is accurate.
• The occlusal contacts are satisfactory.

Now comes the critical decision point: Can you remove the new crown with your hands, or does it feel securely retained due to mechanical retention? If the crown is difficult to remove manually, cementation becomes a reliable option without concern for the crown dislodging during function. If it does not have great mechanical retention, consider bonding the restoration.

If you have decided to cement, we recommend resin-modified glass ionomer (RMGI) cements such as RelyX Luting, Nexus RMGI, FujiCEM Evolve (figure 1), or ZirCad.

Consistency in setup and procedure

Consistency is key to efficiency and successful outcomes. This begins with:

Operatory setup: Verify the setup with your dental assistant. This should be tailored to your personal armamentarium and workflow preferences.

Tooth preparation:

• Depending on sensitivity levels, provide the appropriate anesthesia.
• Pumice the tooth. Rinse and blot dry—do not desiccate.
• Maintain proper isolation throughout the procedure.

Treating the restoration

For zirconia:

• Air abrade with 30–50-micron particles for 10 seconds from 10 cm away (figure 2).
• If no air abrasion unit is available, use Ivoclean (figure 3). Rinse and dry the crown thoroughly.

Cementation of the crown

• Line the walls of the crown evenly with cement to approximately 60% full.
• Seat the crown with moderate pressure.
• Tack cure for three seconds on each proximal surface.
• Perform primary clean-up to remove excess cement with an explorer.
• Allow the cement to fully set (approximately four minutes and 30 seconds—check your manufacturer’s instructions).
• Finish margins as needed.

By following these steps consistently and using the same setup each time, you can streamline the process and ensure reliable outcomes for crown cementation. 

Additional reading:

• Photos for diagnostic planning
• Digital imaging provides more treatment options, easier collaboration, and better patient education: A case study

Editor's note: This article appeared in the April 2026 print edition of Dental Economics magazine. Dentists in North America are eligible for a complimentary print subscription. Sign up here.