High-Grade Disinfection Using High-Density Ozone

High-grade disinfection was investigated in high-density ozone excited by a dielectric barrier dis- charge. The experimental result indicated complete disinfections of Bacillus atrophaeus, a spore forming bac- terium and Aspergillus niger, Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus and Candida albicans have been achieved for the surface exposed high density ozone on metallic career with smooth surface or Exafine, a type of hydrophilic vinyl polysiloxane impression material with complex surface.