Group 1 | Control group—it consisted of 10 uncoated stainless steel orthodontic wires |
Group 2 | Experimental group—it consisted of 10 surface-modified stainless steel orthodontic wires coated with silver |
Group 5 | Control group—it consisted of 10 uncoated nickel titanium wires |
Group 6 | Experimental group—it consisted of 10 surface-modified nickel titanium orthodontic wires coated with silver |