The setting process of a glass ionomer dental cement investigated by an electric conductance method.

The setting time of glass ionomer cement should be controlled accurately. If it sets too rapidly, the crystal formation is disturbed and broken up during the mixing of the cement. We studied the kinetics of the setting of a glass ionomer dental cement by an electric conductance method and found that the rate of setting is directly proportional to the increase of the power to liquid ratio (P/L).

Kinetic studies on improved phosphate dental cement: the measurement of some improved dental cements containing phosphate polymers by an electric conductance method.

The rate of the setting process of zinc phosphate dental cement with organic phosphate polymers as additives was measured by a conductance technique. There are two rate-determining parameters, namely an induction period and a first-order reaction constant. The values of the latter constant are not affected by the additives.