Ferreira, Nadia de Souza, Paula Elaine Cardoso, Natalia Passos Ferreira, Amanda Costa Corocher, Isabela Ferreira Paulino, and Marcia Carneiro Valera. 2016. “Evaluation of Morphological and Chemical Alterations in Enamel, Dentin and Cementum After Internal Bleaching Technique Using Different Bleaching Agents”. Brazilian Dental Science 19 (4). São José dos Campos, Brazil:56-62. https://doi.org/10.14295/bds.2016.v19i4.1286.