THE EFFECT OF AESTHETIC FIBERS ON THE FLOW PROPERTIES OF AN ACRYLIC RESIN DENTURE BASE MATERIAL

Objectives. This study was conducted to measure the effect of viscose rayon esthetic fibers on the flow properties of an acrylic resin dentu re base material. Methods. Two testing methods using a needle penetrom eter and an oscillating rheometer were employed on weighed proportions (0.1%, 0.2%, 0.8%, and 0.3%) of fiber. Results. The results show that the fibers affect the flow properties of the polymer/monomer mix. Inc reasing the percentage of fibers decreases the flow of the material an d reduces the doughing time. With increasing amounts of fiber, a rapid increase in the viscosity occurs with a corresponding adverse effect on flow properties, Significance. It is concluded that these propertie s are important for the successful handling of acrylic materials since they can influence the accuracy and quality of the molded denture.