Elzayat, Ghada Ahmed, Mai Elsayed Elsayed, and Amira El Zoghby. 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). São José dos Campos, Brazil:12p. https://doi.org/10.14295/bds.2020.v23i4.2064.