title: The disinfecting effect of ozonized oxygen in an infected root canal: an in vitro study.
abstract: OBJECTIVE
  To determine the disinfecting effect of ozonized oxygen (120 seconds from the HealOzone generator, KaVo) on Enterococcus faecalis, representing bacteria that are difficult to eliminate in the root canals of human teeth, and to compare it with the conventional irrigants: sterile physiologic sodium chloride solution (negative control group), 3% hydrogen peroxide solution, 0.2% chlorhexidine solution, 1.5% sodium hypochlorite solution, and 3% sodium hypochlorite solution (positive control group).
  
  
  METHODS
  The roots (n = 10 in each group) were sterilized, contaminated with the test microorganisms in a quantitative preparation, rinsed with the test solutions, and dried. The residual concentration of E faecalis was determined through another irrigation stage with the sodium chloride solution.
  
  
  RESULTS
  The positive control group showed a significantly lower concentration of microorganisms than all the other groups, whereas the negative control group showed a significantly higher concentration compared to the other groups. The test groups showed low concentrations.
  
  
  CONCLUSIONS
  Ozonized oxygen appears to be suitable for disinfecting root canal systems in cases where sodium hypochlorite is not indicated.
authors.affiliation: Department of Operative Dentistry and Endodontics, Philipps University of Marburg, Marburg, Germany. stoll@mailer.uni-marburg.de
authors.forename: Richard
authors.initials: R
authors.lastname: Stoll
authors.forename: Leona
authors.initials: L
authors.lastname: Venne
authors.forename: Anahita
authors.initials: A
authors.lastname: Jablonski-Momeni
authors.forename: Reinier
authors.initials: R
authors.lastname: Mutters
authors.forename: Vitus
authors.initials: V
authors.lastname: Stachniss
mesh_terms: D002710:Chlorhexidine / Q000494:pharmacology; D015169:Colony Count, Microbial; D003786:Dental Pulp Cavity / Q000382:microbiology*; D013293:Enterococcus faecalis / Q000187:drug effects*; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology; D010083:Oxidants, Photochemical / Q000494:pharmacology*; D010126:Ozone / Q000494:pharmacology*; D012388:Root Canal Irrigants / Q000494:pharmacology*; D012973:Sodium Hypochlorite / Q000494:pharmacology; D018709:Statistics, Nonparametric
chemical_list: D010083:Oxidants, Photochemical; D012388:Root Canal Irrigants; D010126:Ozone; D006861:Hydrogen Peroxide; D012973:Sodium Hypochlorite; D002710:Chlorhexidine