Evaluation of chelating action of EDTA in association with dakin's solution / Avaliação da ação quelante do EDTA em associação com a solução de Dakin

ABSTRACT

Three methods were used to study the chelating effect of EDTA, associated or not with 0.5 percent sodium hypochlorite (Dakin's solution). The results showed that 1) aqueous EDTA, associated or not with Dakin's solution, is capable of chelating metallic ions; 2) EDTA and EDTA + Dakin's solution are capable of chelating calcium ions; 3) aqueous EDTA, as well as EDTA + Dakin's solution, decalcify dentin, decreasing its Vicker's microhardness; 4) the chelating action of EDTA is not inactivated when associated with Dakin's solution