Exposure Control: Appendix B
Items that cannot
be covered with a barrier or that are not disposable or capable of being
heat sterilized must be disinfected.
A hospital level
surface disinfectant should be used. Many quaternary Ammonium compounds
and isopropyl alcohol are no longer acceptable. Manufacturer's
directions should be followed on dilution and time required for
disinfecting to kill TB. Date the preparation or mix at a regular
designated time according to the specific shelf life of the product
should not be stored in containers with gauze.
4 x 4 gauze is
best for cleaning and disinfecting as they will let the disinfectants
"go" whereas paper towels are made to absorb. Paper towels can be used
rubber gloves, mask and protective eye wear, spray gauze to soak with a
disinf6ctant/cleaner or a cleaner. Wipe the surface. Re-spray another
gauze, wipe and let surfaces sit damp the recommended time, usually 10
minutes. Do not spray switches as they should be covered with barrier
materials. Do not allow excess fluid to run into switch components as it
may damage the electrical system. Care should be taken to clean the
holders for the handpieces and air/water syringe, however, barriers are
Clean all hard
surfaces, hoses, etc. at the end of the day. Between patients clean and
disinfect items and/or surfaces not covered with a barrier or that
Bleach should be mixed daily as well as most iodophors.
Since health care
workers are at the mercy of the manufacturers, you are using
disinfectants that make certain claims. You can only hope these are
valid claims. Some researchers say only ethanol based products should be
used (i.e., Amphyl or Lysol, good disinfectants but are not good
cleaners) and others say to use phenols (i.e., Perfecto Dentaphene,
etc.). If items that go into the patient's mouth are sterilized and many
items disposable or covered with plastic and changed between patients,
there should not be any problem with the hospital level disinfectant you
use. Do not however, use glutaraldehyde as a hard surface disinfectant.
In most cases, chairs only need the chair arms and footrest cleaned.
Disinfectants are very hard on the chair materials. The patient covers
the majority of the chair. Use a small spray bottle of soap & water to
clean the chair parts rather than disinfectants.