Biocompatibility of Portland cement combined with different radiopacifying agents - Lourenço Neto, Natalino; Marques, Nádia C. T.; Fernandes, Ana Paula; Rodini, Camila O.; Duarte, Marco Antonio Hungaro; Lima, Marta C.; Machado, Maria Aparecida de Andrade Moreira; Abdo, Ruy Cesar Camargo; Oliveira, Thais Marchini de (Journal of Oral Science, 2014)