title: Immersion disinfection of irreversible hydrocolloid impressions. Part 1: Microbiology.
abstract: This study evaluated the effectiveness of four disinfectants for irreversible hydrocolloid impressions. Impressions were made of a sterile metal model of the maxillary arch that had been contaminated with one of the following bacteria: Staphylococcus aureus, Salmonella choleraesuis, Pseudomonas aeruginosa, Mycobacterium bovis, or Bacillus subtilis. The impressions were cultured before and after immersion in one of the following disinfectants: lodofive, OMC II, 0.525% sodium hypochlorite, or Alcide LD. Alcide LD achieved a 4-log10 (99.99%) or greater reduction in colony forming units for all five organisms plus mixed oral flora. Sodium hypochlorite achieved a 4-log10 reduction in three of the five organisms and mixed oral flora. Iodofive and OMC II were ineffective against all test organisms and mixed oral flora.
authors: University of Texas Health Science Center, San Antonio.
authors: R S
authors: RS
authors: Schwartz
authors: D V
authors: DV
authors: Bradley
authors: T J
authors: TJ
authors: Hilton
authors: S K
authors: SK
authors: Kruse
mesh_terms: D001412:Bacillus subtilis / Q000187:drug effects; D002713:Chlorine / Q000494:pharmacology; D017606:Chlorine Compounds; D003102:Colloids / Q000737:chemistry; D003760:Dental Impression Materials / Q000737:chemistry*; D004202:Disinfectants / Q000737:chemistry / Q000494:pharmacology*; D004203:Disinfection / Q000379:methods; D004866:Equipment Contamination / Q000517:prevention & control; D062385:Hydroxybenzoates / Q000494:pharmacology; D007466:Iodophors / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D009163:Mycobacterium bovis / Q000187:drug effects; D009930:Organic Chemicals; D010087:Oxides / Q000494:pharmacology; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D012475:Salmonella / Q000187:drug effects; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D017606:Chlorine Compounds; D003102:Colloids; D003760:Dental Impression Materials; D004202:Disinfectants; D062385:Hydroxybenzoates; D007466:Iodophors; D009930:Organic Chemicals; D010087:Oxides; D002713:Chlorine; C043594:Jeltrate; C025109:chlorine dioxide; D012973:Sodium Hypochlorite; C017616:phenolic acid