Determination of para-chloroaniline and reactive oxygen species in chlorhexidine and chlorhexidine associated with calcium hydroxide - Barbin, Luiz Eduardo; Saquy, Paulo César; Guedes, Débora Fernandes Costa; Sousa-Neto, Manoel Damião; Estrela, Carlos; Pécora, Jesus Djalma (Journal of Endodontics, 2008)