Polycarboxylate Cement contains 2 or more monomers, used as permanent cement for cast restorations, stainless steel crowns, and orthodontic bands.

• A. Polycarboxylate Cement
• B. Zinc-Oxide Eugenol Cement
• C. Catalyst
• D. Centric

Answer: (A)

This question is about identifying a permanent luting cement and understanding what makes it suitable for cementing restorations. Polycarboxylate cement is a permanent cement used to lute cast restorations, stainless steel crowns, and orthodontic bands because its chemistry allows it to bond to tooth structure while providing durable, long-term retention. It is made from multiple components that interact to form a strong matrix, which contributes to its adhesion and strength for these applications.

Zinc-oxide eugenol cement, while useful as a temporary cement or base due to its soothing properties, does not provide the same long-lasting adhesion needed for permanent cementation of those restorations. A catalyst is a substance that speeds up a chemical reaction, not a cement material, and centric refers to a relation in bite position rather than a type of cement.