, Marcos de Azevêdo Rios1, Carlos Eduardo Fontana3, Daniel Guimarães Pedro Rocha3, Sergio Luiz Pinheiro3, Carlos Eduardo da Silveira Bueno1 1Department of Endodontics, São Leopoldo Mandic Dental School, Campinas, SP, Brazil. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/