Effects of different radiation doses on the microhardness, superficial morphology, and mineral components of human enamel - Cunha, Sandra Ribeiro de Barros da; Fonseca, Felipe Paiva; Ramos, Pedro Augusto Minorin Mendes; Haddad, Cecília Maria Kalil; Fregnani, Eduardo Rodrigues; Aranha, Ana Cecilia Corrêa (Archives of Oral Biology, 2017)