Which material would you use to cement a final (definitive) crown received from the lab?

Correct answer: C. Zinc phosphate cement

• A. 'Deep cure resin' is not a standard final cementation material category as described.
• B. Light-cure resin cement is generally inappropriate for full-coverage crowns where light cannot penetrate to fully cure the cement under the entire restoration.
• C. Correct. Zinc phosphate cement is a traditional definitive luting agent appropriate for permanently cementing a final crown (particularly metal/PFM restorations), per the answer indicated in this scenario.
• D. Temporary cement is, by definition, used for provisional restorations, not definitive final cementation.

Note: Final cement choice depends on the crown material; the lab needs to know cementing material in advance to design accordingly.