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Biocorrosive behavior of sulphate-reducing bacteria in kerr endodontic files: Determination of the corrosion.
Heggendorn, Fabiano Luiz; Teixeira Pinto, Luiz André Lucas; Gonçalves, Lucio Souza; Lione, Viviane de Oliveira Freitas; Cravo Junior, Walter Barreiro; Soares Lutterbach, Marcia Teresa.
Afiliação
  • Heggendorn FL; Department of Corrosion and Degradation, Laboratory of Biocorrosion and Biodegradation, National Institute of Technology, Rio de Janeiro, Brazil.
  • Teixeira Pinto LAL; Department of Drugs and Medicine, Laboratory of Pharmaceutical Bioassays, School of Pharmacy, Fluminense Federal University, Rio de Janeiro, Brazil.
  • Gonçalves LS; Department of Corrosion and Degradation, Laboratory of Biocorrosion and Biodegradation, National Institute of Technology, Rio de Janeiro, Brazil.
  • Lione VOF; Post-Graduate Program in Dentistry, Faculty of Dentistry, Estacio de Sa University, Rio de Janeiro, Brazil.
  • Cravo Junior WB; Department of Drugs and Medicine, Laboratory of Pharmaceutical Bioassays, School of Pharmacy, Fluminense Federal University, Rio de Janeiro, Brazil.
  • Soares Lutterbach MT; Department of Corrosion and Degradation, Laboratory of Biocorrosion and Biodegradation, National Institute of Technology, Rio de Janeiro, Brazil.
J Conserv Dent ; 23(2): 196-200, 2020.
Article em En | MEDLINE | ID: mdl-33384495
AIMS: This study determined the corrosion rate by mass loss caused by oral strains of sulphate-reducing bacteria (SRB) in Kerr endodontic files (KF), aiming the development of a biopharmaceutical that facilitates the removal of endodontic limb fragments from root canals. MATERIALS AND METHODS: Nine new KF were analyzed after immersion in the modified Postgate E culture medium inoculated with Desulfovibrio desulfuricans oral (84 days), Desulfovibrio fairfieldensis in the consortium (84 days) and environmental D. desulfuricans (119 days). RESULTS: Optical microscopy revealed corrosion suggestive areas in all files submitted to immersion in SRB cultures, presenting a statistical difference (P < 0.05) between the samples environmental D. desulfuricans and KF control and between oral D. desulfuricans and KF control. Epifluorescence microscopy revealed an active SRB biofilm over the entire metal surface of the KF, as evidenced by the SYTO® 9 fluorophore. CONCLUSION: SRB were capable of promoting biocorrosion in Kerr type endodontic files, but with low rate.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Conserv Dent Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Índia
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Conserv Dent Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Índia