Cabrera, Adriana, Melissa Madrid, Luisa Pacheco, Ana Suarez, and Herney Garzón. 2008. “Effect of Hydrogen Peroxide Activated by Ultraviolet Light and Carbamide Peroxide in Teeth Bleaching”. Revista Estomatología 16 (1). https://doi.org/10.25100/re.v16i1.5672.