Lazzari, Jaqueline, et al. “Spectrophotometric Analysis of Internal Bleaching of Traumatized Teeth With Coronal Discoloration Following Regenerative Endodontic Procedures”. Brazilian Journal of Oral Sciences, vol. 21, no. 00, Aug. 2021, p. e225232, doi:10.20396/bjos.v21i00.8665232.