Color and gloss evaluation of titanium dioxide coating for acrylic resin denture base

We examined the clinical appearance (color, gloss, and surface roughness) of TiO2 coating on polymethyl methacrylate (PMMA) resin dentures. A spraying method, using air brushes, was used to generate thin uniform TiO2 coating. PMMA resin, primer-coated PMMA, and TiO2-coated PMMA (with primer) specimens were compared. The Commission Internationale de l’Eclairage (CIE) color system revealed color variations between the with/without coated samples. The TiO2-coated PMMA specimen displayed high levels of glossiness, highlighting the efficient self-cleansing actions of the denture. The measured surface roughness decreased upon primer coating, and increased following TiO2 coating. The thin TiO2 coating afforded high levels of glossiness while maintaining the color of the denture base material.