Effects of brushing with abrasive dentifrices containing various materials on the surface roughness of acrylic resins

摘要

The aim of this study was to analyze the effects of brushing base dentures with various toothpastes. Heat-cured acrylic resin specimens were divided into three groups and were brushed with dentifrices containing silica, silica + calcium carbonate, and silica + calcium carbonate + perlite for 22 min to represent one year of brushing. The surface roughnesses of the base dentures were then determined and compared using paired t-tests and Kruskall–Wallis tests. These analyses showed that more complex abrasive materials result in the greater surface roughness of acrylic dentures.