A lithium disilicate crown should be cemented with which type of cement?

Correct answer: C. Resin cement

• A. RMGI can be used for some restorations but is not the material of choice for lithium disilicate crowns.
• B. Zinc phosphate cement is used for metal crowns — not suitable for lithium disilicate which requires adhesive cementation.
• C. Correct. Lithium disilicate (e-max) crowns require adhesive resin cement for optimal bonding. The cementation protocol involves etching the ceramic with HF acid, applying silane, then using resin cement for maximum retention and aesthetics.
• D. Conventional glass ionomer cement does not provide adequate bond strength for lithium disilicate.