Purpose: A low-temperature low-energy capillary-tube-based argon micro-plasma system
was applied to disinfect Streptococcus mutans-containing biofilm. Materials and methods:
The micro-plasma system uses a hollow inner electrode that is ignited by a radio-frequency
power supply with a matching network. The energy content was analyzed using optical
emission spectroscopy. The micro-plasma-induced effect on a biofilm cultured for 24 or 48 h
with a working distance of≈ 3 mm at low temperature was evaluated. The morphologies of …