EDS analysis of gutta-percha cones disinfected by 1% and 2.5% sodium hypochlorite solutions

Authors

  • Alessandra Sverberi Carvalho UNESP Univ Estadual Paulista
  • Flávia Martins Leal UNESP Univ Estadual Paulista
  • Rafaela Andrade Vasconcelos UNESP Univ Estadual Paulista
  • Rafael Binato Junqueira UNESP Univ Estadual Paulista
  • Simone Helena Ferreira Gonçalves UNESP Univ Estadual Paulista

DOI:

https://doi.org/10.14295/bds.2015.v18i4.1140

Abstract

Objective: To evaluate the effects of 1% and 2.5% sodium hypochlorite (NaOCl) solutions at different periods of time on the composition of gutta-percha cones using Energy Dispersive Spectroscopy (EDS).

Material and Methods: 110 master gutta-percha points were divided into 3 control groups and 8 experimental groups. Cones were immersed in 1% and 2.5% NaOCl for 30 minutes, 6, 12, 24 hours. Then, composition of the samples was analyzed by EDS. Statistical analysis was performed using the ANOVA and Tukey tests (p<0.05).

Results: There was an increase of oxygen in experimental groups, and decrease of zinc when NaOCl was used, concentration and time-dependent.

Conclusions: The disinfection with NaOCl solution causes alterations in the composition of gutta-percha cones. These modifications in gutta-percha structure might change important characteristics, increasing the risk of leakage and consequently failure of root canal treatment.

Author Biographies

Alessandra Sverberi Carvalho, UNESP Univ Estadual Paulista

Department of Restorative Dentistry, School of Dentistry, Institute of Science and Technology, UNESP Univ Estadual Paulista, São José dos Campos, SP, Brazil.

Flávia Martins Leal, UNESP Univ Estadual Paulista

Department of Restorative Dentistry, School of Dentistry, Institute of Science and Technology, UNESP Univ Estadual Paulista, São José dos Campos, SP, Brazil.

Rafaela Andrade Vasconcelos, UNESP Univ Estadual Paulista

Department of Restorative Dentistry, School of Dentistry, Institute of Science and Technology, UNESP Univ Estadual Paulista, São José dos Campos, SP, Brazil.

Rafael Binato Junqueira, UNESP Univ Estadual Paulista

Department of Restorative Dentistry, School of Dentistry, Institute of Science and Technology, UNESP Univ Estadual Paulista, São José dos Campos, SP, Brazil.

Simone Helena Ferreira Gonçalves, UNESP Univ Estadual Paulista

Department of Biosciences and Oral Diagnosis, School of Dentistry, Institute of Science and Technology, UNESP Univ Estadual Paulista, São José dos Campos, SP, Brazil.

Downloads

Published

2015-12-07

Issue

Vol. 18 No. 4 (2015): Oct. - Dec. / 2015 - Published November 2015

Section

Clinical or Laboratorial Research