Figure 4

Relevance of the intensity and time of application of a constant dose of 0.125 C of galvanic currents on the bactericidal effect on S. aureus. 14 G tri-beveled needle (2.2 mm × 50 mm) was used, subjecting the bacterial suspensions to five consecutive impacts with the following treatments: 0.4 mA for 62.5 s, 1 mA for 25 s, 2 mA for 12.5 s, 3 mA for 8.3 s, 4 mA for 6.2 s and 5 mA for 5 s. Data were expressed as mean with CI of the number of viable log₁₀ CFU/ml. (*: statistical significance p < 0.05 in relation to the control group; **: statistical significance p < 0.001 in relation to the control group).