Question

Why zinc polycarboxylate cement is used instead of zinc phosphate?

Answer 1

Zinc Phosphate Cement

Formerly, zinc phosphate cement was the most widely used luting agent. Composed essentially of phosphoric acid liquid that is mixed with zinc oxide powder, the cement has excellent handling characteristics such as setting time, fluidity, and film thickness. Furthermore, this type of cement has a long history of successful applications for permanent cementation

Answer 2

The compressive strength of zinc polycarboxylate is inferior to zinc phosphate cement, its tensile strength is higher, and the overall retention is inferior to zinc phosphate cements.