For blood spillages, care should be taken to observe a protocol that ensures protection against infection. The use of hypochlorite at 1000 ppm available chlorine is recommended. Hypochlorite should be made up either freshly using hypochlorite-generating tablets or at least weekly in clean containers. Contact times should be reasonably prolonged (not less than five minutes). A higher available chlorine concentration of 10,000 ppm is useful, particularly for blood contamination. The process should be initiated quickly and care should be taken to avoid corrosive damage to metal fittings etc. The use of alcohol within the same decontamination process is not advised.
Immediately after removal from the mouth, any device should be rinsed under clean running water. This process should continue until the device is visibly clean.
All devices should receive disinfection according to the manufacturer’s instructions. This will involve the use of specific cleaning materials noted in the CE-marking instructions. After disinfection, the device should again be thoroughly washed. This process should occur before and after any device is placed in a patient’s mouth.
Consult the impression/ device material manufacturer’s instructions for use for disinfection instructions including its compatibility with chlorine and recommended concentrations in parts per million (ppm).
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