Properties of Luting Cements Containing an Indium Trifluoride : Part I.The Effects of Incorporation of InF₃ in the Powder for Luting Cement

Abstract

The effects of an indium trifluoride (InF₃) incorporated in the cement powder on the physical properties of three different luting cements;zinc phosphate, polycarboxylate and glass ionomer cements, were examined. After the powder for each cement containing a small amount of InF₃ (5-7wt%) was mixed with the mixing liquid, the setting time, the compressive and tensile strengths (24hr), the film thickness, the solubility and disintegration (24hr) of each cement and the amount of F^- ions released from each cement were determined. The results were compared to those of the cements without InF₃. The mechanical properties of each cement were not affected by InF₃ with the incorporated amount used in the present study. The amount of F^- ions released from the glass ionomer or polycarboxylate cement and the F^- ions released from the zinc phosphate cement were increased in the cements containing InF₃ in the powder. The incorporation of InF₃, in the cement powder significantly influenced the setting time, film thickness and solubility and disintegration of all the cements examind.