The reduced ph method with indirect plasma for safe and effective disinfection in dentistry and surgery

摘要

• can be supplied into liquid by non-contact plasma. The non-contact plasma with 400 cm extra tube has e quivalent strong bactericidal activity only with the reduced pH method. In addition, we found that the plasma treated water has strong bactericidal activity for a few minutes with the reduced pH method. This suggests that the disinfection can be done by the plasma treated water which contains short-lived active species (cannot supplied by chemical reagent) and it would bring safety plasma medicine considering usual contact or non-contact plasmas to human body. Currently, animal experiments for root canal therapy in dentistry [4] and surgical site infection prevention in surgery have been done with indirect plasma disinfection techniques of non-contact pla- ma and plasma treated water.