Restorative & Materials · patient case question
Which cement would you use for a lithium disilicate restoration?
Patient case: Prosthodontic and restorative materials
Scenario: Three items on pontics, cements and saliva.
Show answer and explanation
Correct answer: B. Dual-cure resin cement
- A. Zinc oxide-eugenol is a provisional cement; eugenol also inhibits resin polymerisation.
- B. Correct. Lithium disilicate gains a large share of its clinical strength from adhesive bonding. Etch with hydrofluoric acid, apply silane, then cement with resin — dual-cure where light cannot fully penetrate.
- C. Glass ionomer bonds chemically to tooth structure but not to silica-based ceramic, and it does not reinforce the restoration.
- D. Zinc phosphate is a purely mechanical luting agent, suitable for metal and metal-ceramic crowns but not for a bonded ceramic.
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