“…These molecules diffuse through enamel and dentin, producing oxidation of tooth pigments; this chemical reaction is what provides the bleaching effect (Hortkoff, Bittencourt, Nadal, & Rezende, ). The by‐products of this reaction can reach the pulp chamber (Shackelford, Kaufmann, & Paules, ; Young, Fairley, Mohan, & Jumeaux, ) and cause serious damage to pulp tissue, especially to odontoblasts underlying dentin (Li & Greenwall, ; Moghadam et al, ; Tredwin, Naik, Lewis, & Scully, ); this may affect the regenerative potential of pulp cells, once it induces pro‐inflammatory cytokine release (Attin, Vollmer, Wiegand, Attin, & Betke, ; Soares et al, ).…”