M. V. Cardoso, G. Vicenzotti, A. C. P. Sant’Ana, M. S. Ragghianti Zangrando, and C. A. Damante, “Reproducibility and comparison between methods for gingival color evaluation: a validation study”, Braz. J. Oral Sci., vol. 21, no. 00, p. e225946, Jul. 2022.