The inter-reaction of polycarboxylate cements with different adherened via pH and titration measurements.

Abract: This investigation was Planned to study, by PH measurements and titration method quantitively, the inter action of free acid group present in each mix of different types of poly carboxylate cements with enamel, dentin, Copper, chromium Oxide and nickel. Results: it was found that, the highest PH value in case PCA cement and highest reachivity when compared with Durelon and carboxylon cements. As regard the reactivity of the adherened used, the highest reactivity in case of enamel followed by dentin, Copper, chromium oxide and the least with nickel. It was concluded that: (1) Titration method is a usefull and easy method to study the adhesive – adherened inter – reaction. (2) The reactivity of poly Carboxylate Cements depend on the amount of free Carboxylic acid groups in the freshly mixed cement.