1. Campos SF, César IC, Munin E, Liporoni PC, do Rego MA. Analysis of photoreflectance and microhardness of the enamel in primary teeth submitted to different bleaching agents. J Clin Pediatr Dent. 2007;32:9–12.
2. Lorenzo JA, Gumbau GC, Sanchez CC, Navarro LF. Clinical study of a halogen light-activated bleaching agent in nonvital teeth: Case reports. Quintessence Int. 1996;27:383–8.
3. Donly KJ, Donly AS, Baharloo L, Rojas-Candelas E, Garcia-Godoy F, Zhou X, et al. Tooth whitening in children. Comp Contin Educ Dent. 2002;23:22–8.
4. Sulieman M. An overview of tooth discolouration: extrinsic, intrinsic and internalized stains. Dent Update. 2005;32:463–4. https://doi.org/10.12968/denu.2005.32.8.463.
5. Meyfarth S, Abreu MGL, Fernandes TO, Milani AJ, Antunes LS, Antunes LAA. Dental trauma in primary dentition and the importance of its preservation until the eruption of permanent successor: a 6-year follow-up case report. Int J Burns Trauma. 2021;11:424–9.