The most commonly used
bleaching agents contain different concentrations of
hydrogen peroxide and
carbamide peroxide. In the present case, the bleaching procedure was performed using an induced field of cold atmospheric plasma, obtained from dielectric barrier discharge. The
therapeutic effect of the device used in the clinical procedure is based on floating
electrode dielectric barrier discharge, in which the glass
electrode functions as the primary
electrode, while the therapeutic area, which in this case is the tooth, represents the secondary
electrode. A periodontal (PA) probe is a glass tube filled with a noble gas, which generates an electrical discharge in the gap between the tip of the
electrode surface and the therapeutic area, thus producing
reactive oxygen species. Bleaching with only the cold atmospheric plasma bleaching technique, without any conventional
bleaching agents, was performed successfully for an
endodontically treated tooth. The cold atmospheric plasma bleaching technique, which could be a novel approach for the bleaching of non-vital teeth, provides good clinical results and is safe for clinical use.