Surface Roughness in Nanoparticle Resin Composites Subjected to Two Polishing Systems: An In vitro Comparative Study. - Ramírez-Vargas GG; Ladera-Castañeda MI; López-Gurreonero C; Cornejo-Pinto A; Cachay-Criado H; Cervantes-Ganoza LA; Cayo-Rojas CF (Journal of International Society of Preventive & Community Dentistry, 2022)