2018 Volume 37 Issue 2 Pages 109-117
Six light-cured glazing agents were applied to the surface of denture base acrylic resins prepared by heat polymerization. The surface roughness, surface gloss, contact angle against water, color difference, water absorption, and compressive shear bond strength using adhesive resin cement were measured. As a result, compared with the surface of acrylic resin with no light-curing glazing agent （control）, the surface roughness decreased, the contact angle decreased with five agents, and the compressive shear bond strength slightly decreased. On the other hand, the surface gloss markedly increased, but the color difference and water absorption rate did not change. In addition, the properties before and after wear tests by a toothbrush were examined. After wear tests, the surface roughness increased, and the volume loss rate, surface gloss, and contact angle decreased. From the results of a tarnish test using basic fuchsin solution, the color difference became large, and the surface gloss decreased with one agent, but did not change with the 5 remaining agents. From the above results, it was revealed that the light-cured glazing agents not only improve the surface roughness and surface gloss of the heat-cured denture base acrylic resin, but also improve the wear resistance.
