Influence of energy and pulse repetition rate of Er:YAG laser on enamel ablation ability and morphological analysis of the laser-irradiated surface - Corona, Silmara Aparecida Milori; Souza Gabriel, Aline Evangelista; Chinelatti, Michelle Alexandra; Pécora, Jesus Djalma; Borsatto, Maria Cristina; Palma-Dibb, Regina Guenka (Journal of Biomedical Materials Research. Part A, 2008)