Immersion disinfection of irreversible hydrocolloid impressions. Part 1: Microbiology

Richard S. Schwartz, Donald V. Bradley, Thomas J. Hilton, Sandra K. Kruse

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


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 subtihs. 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, lodofive and OMC II were ineffective against all test organisms and mixed oral flora.

Original languageEnglish (US)
Pages (from-to)418-423
Number of pages6
JournalInternational Journal of Prosthodontics
Issue number5
StatePublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Oral Surgery


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