alexa Pulp tissue dissolution when the use of sodium hypochlorite and EDTA alone or associated.


Journal of Oral Hygiene & Health

Author(s): Marcus Vincius Reis S, Fabiana Vieira VierPelisser, Mirena Sonza Darcie, Daniele Geni Rockenbach Smanio, Francisco Montagner

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Purpose: The aim of the present study was to evaluate the tissue dissolving capacity of various concentrations of sodium hypochlorite either alone or in combination with 17% EDTA. 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). Results: We measured a significant difference between the sample weight before and after treatment for each of the tested groups ( P <0.05). The 2.5% sodium hypochlorite solution (G4) completely dissolved the pulp tissue within the test period. NaOCl+EDTA was less effective than sodium hypochlorite alone at dissolving the pulp tissue ( P <0.05), and EDTA alone (G5) did not markedly dissolve the pulp tissue. Conclusion: Using EDTA together with NaOCl reduced the tissue dissolving properties compared with NaOCl alone, regardless of the concentration of NaOCl that was used.

This article was published in Rev Odonto Cienc and referenced in Journal of Oral Hygiene & Health

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