Influence of different processing techniques for prosthetic acrylic resins in the surface roughness parameters: a research article

Different processing techniques are employed to obtain poly (methyl methacrylate) (PMMA) with consistent surface quality in terms of topography and tribological function. The purpose of this research is to evaluate its influence on the surface height distribution. In this research, samples of conventional and CAD/CAM acrylic resins were prepared. The following surface roughness parameters were extracted from the profilometric readings: arithmetic mean roughness (Pa), skewness (Psk) and kurtosis (Pku). Profilometric profiles were additionally obtained. The average roughness (Pa) with the conventional technique was significantly higher compared to CAD/CAM (t = 4.595; P