Two-year randomized clinical trial of enamel matrix derivative treated infrabony defects: radiographic analysis - Zangrando, Mariana Schutzer Ragghianti; Chambrone, Daniela; Pasin, Ivan Munhoz; Conde, Marina Clemente; Pannuti, Cláudio Mendes; Lima, Luiz Antônio Pugliesi Alves de (BMC Oral Health, 2014)