Abstract
The purpose of this study was to evaluate physical properties of different luting cements (zinc phosphate, polycarboxylate of glass ionomer cements) containing indium trifluoride (InF3) in the liquid. After each cement was mixed using the liquid containing approximately 100ppm F- ions of InF3, the setting time, compressive and tensile strengths (24hr), film thickness, solubility and disintegration (24hr) and amount of released F- ions were determined for each cement. The results were compared to those obtained for each cement mixed in liquid without InF3 or for each cement containing InF3 in the powder. The addition of InF3 to the liquid decreased the mechanical strength of the zinc phosphate cement. The amount of fluoride ions released from the zinc phosphate or the polycarboxylate cement containing InF3 in the liquid was less than that released from the cement containing InF3 in the powder. The addition of InF3 to the powder for polycarboxylate cement significantly increased the solubility and disintegration. However, the addition of InF3 to the liquid significantly decreased the solubility and disintegration. The amount of solubility and disintegration of the glass ionomer cement containing InF3 in the liquid or the powder was greater than that of the glass ionomer without InF3. The addition of the InF3 to the liquid for zinc phosphate or polycarboxylate cement caused the release of a small amount of F- ion without serious deterioration of the physical properties of the cements.
