title: Disinfection of artificially contaminated Resilon cones with chlorhexidine and sodium hypochlorite at different time exposures.
abstract: OBJECTIVE
  The aim of this study was to evaluate the efficiency of chlorhexidine (CHX) and sodium hypochlorite (NaOCl) solutions on Resilon cones that were artificially contaminated with microbial samples of Enterococcus faecalis or Candida albicans at various concentrations and time exposures.
  
  
  METHODS
  Resilon cones artificially contaminated with E faecalis or C albicans were left in contact with 1% NaOCl, 5% NaOCl, and 2% CHX disinfecting solutions for 1 and 5 minutes. The cones were then individually transferred to the test tubes, which contained 10 mL of thioglycollate media, and were incubated at 37 degrees C for 7 days. The antimicrobial activities of tested agents were determined by microbial growth.
  
  
  RESULTS
  All of the Resilon cones contaminated with E faecalis or C albicans could be disinfected with 1% and 5% NaOCl for 1 and 5 minutes and with 2% CHX for 5 minutes. Three of 7 Resilon cones contaminated with E faecalis and 1 of 7 Resilon cones contaminated with C albicans could not be disinfected with 2% CHX at 1 minute of treatment.
  
  
  CONCLUSIONS
  In conclusion, these results demonstrated that 1% and 5% NaOCl solutions are effective agents for disinfecting Resilon cones in 1- or 5-minute treatments. Two percent CHX was only effective after 5 minutes of treatment.
authors.affiliation: Department of Conservative Dentistry and Endodontics, University of Cukurova, Faculty of Dentistry, Adana, Turkey.
authors.forename: Aysin
authors.initials: A
authors.lastname: Dumani
authors.forename: Oguz
authors.initials: O
authors.lastname: Yoldas
authors.forename: A Sehnaz
authors.initials: AS
authors.lastname: Isci
authors.forename: Fatih
authors.initials: F
authors.lastname: Köksal
authors.forename: Begüm
authors.initials: B
authors.lastname: Kayar
authors.forename: Esra
authors.initials: E
authors.lastname: Polat
mesh_terms: D000891:Anti-Infective Agents, Local / Q000494:pharmacology; D002176:Candida albicans / Q000187:drug effects; D002710:Chlorhexidine / Q000494:pharmacology*; D015169:Colony Count, Microbial; D019551:Dental Disinfectants / Q000494:pharmacology; D004203:Disinfection / Q000379:methods; D004305:Dose-Response Relationship, Drug; D013293:Enterococcus faecalis / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants / Q000494:pharmacology*; D012973:Sodium Hypochlorite / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D000891:Anti-Infective Agents, Local; D019551:Dental Disinfectants; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C486892:resilon sealer; D012973:Sodium Hypochlorite; D002710:Chlorhexidine