[Bactericidal action of non-thermal plasma on biofilms formed in vitro and within a root channel].

Aim: Evaluation of efficiency of non-thermal plasma as bactericidal agent affecting biofilms formed in vitro and on walls of a root channel.

Materials And Methods: The multiple antibiotic resistant strain Staphylococcus epidermidis isolated from pulpitis was used. Biofilms formed in vitro on the plastic surface and ex vivo at the walls of the root canal were treated with plasma torch formed by argon:air (9:1) mixture eradiated with 100 kHz electrtomagnetic field.

[Effect of cold plasma on the E. coli cell wall and plasma membrane].

The effect of cold plasma on E. coli cells was studied. It was shown that the treatment of E.