Sá, P. M. de, Yui, K. C. K., Kubo, C. H., Gomes, A. P. M., & Silva, E. G. da. (2010). Evaluation of extraradicular pH after intracoronal bleaching using four bleaching agents. Brazilian Dental Science, 12(2). https://doi.org/10.14295/bds.2009.v12i2.331