Elzayat, G.A., Elsayed, M. E. and El Zoghby, A. 2020. Clinical Performance of Direct Anterior Composite Restorations Using Esthetic Dual-Shade versus Polychromatic Natural Layering Technique: a split mouth randomized controlled clinical trial. Brazilian Dental Science. 23, 4 (Sep. 2020), 12p. DOI:https://doi.org/10.14295/bds.2020.v23i4.2064.