Surgical Residues
Blood, pus, and other secretions contain chloride ions which lead to
corrosion, most often appearing as an orange-brown color. If left on the instruments
for any extended period of time (1-4 hours), the instrument will mark and stain,
especially if these residues are allowed to dry. Therefore, always clean and dry
every instrument thoroughly after use. Only sterilize a clean instrument. The
most damaging procedure is to allow dried-on debris to become baked-on stains in the
autoclave. The temperature of the autoclave (250°-270°) will cause chemical
reactions that can make the stain permanent. Remember, an autoclave does not clean;
it will only sterilize.
Tap Water
Even tap water can stain an instrument. Tap water contains a high
concentration of minerals which can be seen as a fine deposit on the instrument surface.
Rinsing with distilled water eliminates such deposits. Water with high
mineral counts left to sit on an instrument can cause unattractive stains.
Therefore, it is important to dry your instruments immediately and thoroughly
Cleansers
The cleansers and cleaning agents you use could also be a cause of
corrosion. Strong substances, as well as those containing a chemical make-up of acid
or alkaline-based solutions can lead to pitting and staining. Wash instruments with a
neutral pH soap (between 7pH - 8pH) for optimal results. Anything higher may damage
the instrument and is not necessary. Do not use Betadine® Solution, dish soap, laundry soap,
or surgeons hand scrub. These products will cause spotting and corrosion.
Using an instrument cleaning brush is a good idea, especially for jaw serrations,
teeth, and hinged areas.
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