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Effect of electric current and silver electrodes on oral bacteria
Author(s) -
Tronstad Leif,
Trope Martin,
Hammond Benjamin F.
Publication year - 1985
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.1985.tb00572.x
Subject(s) - electrode , petri dish , microorganism , current (fluid) , electric current , direct current , agar , chemistry , bacteria , agar plate , materials science , electrical engineering , microbiology and biotechnology , voltage , biology , genetics , engineering
The effect of a weak direct current and silver ions on microorganisms commonly found in the root canal was studied. Pour plates with the various microorganisms were prepared in petri dishes and 2 identical silver wire electrodes were submerged in the agar. The plates were incubated at 37°C for 24 hours with the electrodes attached lo the positive and negative poles of constant current generators set to deliver currents of 0.2, 0.4, 0.8, 1.5 and 10.0 μamp. Zones of inhibition were evident at the positive electrode in all experiments. The widest zones were found at 1.5 μamp followed by 0.8 and 10.0 μamp. Statistically, the responses at these current levels could not be differentiated, but they were different from the results obtained at 0.2 and 0.4 μamp.