bioburden can protect contaminant microorganisms from the destructive effects of alcohol for prolonged intervals. Rapid evaporation from treated environmental surfaces also limits alcohol activity on protein coated bacteria and viruses which are found commonly in the spatter generated during dental procedures. Other problems include corrosiveness of alcohols on metal surface and destruction of certain materials (i.e. plastics and vinyl coverings). Advantages: 1) Rapidly bactericidal. 2) Tuberculocidal and virucidal (lipophilic viruses only). 3) Benefits from positive historic perception. 4) Economical. Disadvantages: 1) Not sporicidal. 2) Diminished activity with bioburden. 3) Damaging to certain materials including rubber and plastics.
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