Pulp tissue dissolution when the use of sodium hypochlorite and EDTA alone or associated Dissolução do tecido pulpar quando do uso do hipoclorito de sódio e EDTA isoladamente ou associados

Methods: Eighty bovine pulp fragments were prepared, and their weight was determined using a precision balance. Each pulp fragment was immersed for 2 hours in a solution/mixture that was based on the following groups: G1 – saline solution; G2 – 0.5% NaOCl; G3 – 1.0% NaOCl; G4 – 2.5% NaOCl; G5 – 17% EDTA; G6 – 0.5% NaOCl+17% EDTA; G7 – 1.0% NaOCl+ 17% EDTA; and G8 – 2.5% NaOCl+17% EDTA. The final weight was measured, and the weight loss was calculated. A statistical analysis was performed using either the Student’s t-test for paired samples or an ANOVA and Tukey tests (P<0.05 was considered to be significant).