Etidronate causes minimal changes in the ability of sodium hypochlorite to dissolve organic matter

Autor(es)

Tartari, T. ^[1] ; Guimaraes, B. M. ^[1] ; Amoras, L. S. ^[2] ; Duarte, M. A. H. ^[1] ; Silva e Souza, P. A. R. ^[2] ; Bramante, C. M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dent Sch Bauru, Dept Endodont, Bauru, SP - Brazil

^[2] Fed Univ Para, Sch Dent, Dept Endodont, BR-66059 Belem, Para - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Endodontic Journal; v. 48, n. 4, p. 399-404, APR 2015.
• Citações Web of Science: 20

Resumo

AimTo evaluate the effect of individual and combined use of sodium hypochlorite (NaOCl), etidronate (HEDP) and ethylenediaminetetraacetic acid (EDTA) in tissue dissolution. MethodologySixty fragments of bovine muscle tissue were prepared and their weights determined on a precision scale. The samples were then distributed in the following groups (n=10): G1 - saline solution (control); G2 - 17% EDTA; G3 - 18% HEDP; G4 - 2.5% NaOCl; G5 - mixture of 5% NaOCl+17% EDTA; and G6 - mixture of 5% NaOCl+18% HEDP. The specimens in each group were immersed in the solutions for 5, 10 and 15min and reweighted at each time period. Analysis of variance (anova) and Tukey's multiple-comparison tests (<0.05) were applied to identify the intragroup and intergroup differences. ResultsG1, G2, G3 and G5 did not dissolve the organic matter. G4 and G6 significantly reduced the weights of specimens at all periods. Amongst the groups, the difference in ability to dissolve organic matter was greater and significant in the following order G4=G6>G5=G3=G2=G1 after 5min of immersion and G4>G6>G5=G3=G2=G1 after 10 and 15min of immersion. ConclusionThe only solution capable of dissolving organic matter was NaOCl. In the mixtures analysed, this ability was arrested by EDTA; however, it was minimally affected by the HEDP, proving that this combination, if used during the biomechanical preparation, is able to dissolve of organic matter. (AU)

• Processo FAPESP: 13/19789-3 - Efeitos de diferentes regimes de irrigação nas propriedades físico-químicas da dentina e consequências das alterações na adesão de microrganismos e do cimento endodôntico AH Plus
• Beneficiário: Talita Tartari
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/06738-9 - Avaliação de materiais, instrumentos e protocolos de irrigação empregados no tratamento endodôntico, por meio da microscopia eletrônica de varredura e micro análise de raios X.
• Beneficiário: Marco Antonio Hungaro Duarte
• Modalidade de apoio: Auxílio à Pesquisa - Regular