Digital subtraction radiographic analysis of the combination of bioabsorbable membrane and bovine morphogenetic protein pool in human periodontal infrabony defects - Guimarães, Maria do Carmo Machado; Passanezi, Euloir; Sant'Ana, Adriana Campos Passanezi; Greghi, Sebastião Luiz Aguiar; Taba Junior, Mario (Journal of Applied Oral Science, 2010)