Roselino, L. de M. R.; Alandia-Román, C. C.; Leite, V. M. F.; Silva- Lovato, C. H.; Pires-de-Souza, F. de C. P. Color Stability and Surface Roughness of Artificial Teeth Brushed With an Experimental Ricinus Communis Toothpast. Braz. J. Oral Sci. 2016, 14, 267-271.