Fluid Behavior of Root Canal Paste

(Part 2). Fluid behavior of Calvital

Abstract

The rheological properties of a calcium hydroxide paste (Calvital) were studied using a cone and plate viscometer. Calvital was considered to be thixotropy based on the hysteresis loops of shear-stress rotational speed. The loops changed with temperature and the powder/liquid ratio. The strength of the thixotropy increased as the temperature was decreased and as the powder/liquid ratio was increased. Between these two factors, the thixotropy was influenced largely by the powder/liquid ratio.