Kahvecioğlu, Firdevs, et al. “The Effect of Optical Brightening Toothpaste on the Color Stability of Esthetic Restorative Materials”. International Dental Research, vol. 11, no. Suppl. 1, Sept. 2021, pp. 81-85, https://doi.org/10.5577/intdentres.2021.vol11.suppl1.13.