Rovai, E. silva, de Mello Tera, T., Carvalho de Marco, A., Neves Jardini, M. A., Pedrine Santamaria, M., & David Kerbauy, W. (2013). Evaluation of dental staining using a dentifrice containing chlorhexidine and zinc acetate. A doble blind randomized clinical trial. Brazilian Dental Science, 16(2), 51–58. https://doi.org/10.14295/bds.2013.v16i2.884