L. SAMARANAYAKE
Oral Microbiology, Faculty of Dentistry
The University of Hong Kong, Hong Kong
With the vast number of infections affecting humans either
clinically or sub clinically it is impossible to ascertain whether the
patient who attends for dental treatment is a carrier of infectious agents.
Therefore, all patients should be treated as if they were reservoirs of
pathogens. The infection control procedures involved in such treatment are
termed standard precautions (previously termed universal precautions) and
all clinical procedures performed on any patient should be conducted using
standard infection control.
The first set of recommendations on infection control in
dentistry, issued in the late 1980s, focused primarily on the transmission
of blood-borne pathogen transmission in dental care and other clinical
settings and was termed universal precautions. These recommendations
emphasized the need to treat blood and other bloody fluids contaminated with
blood from all patients as potentially infectious. However the realization
that moist body substances are equally important in disease transmission led
to the development of standard precautions in the mid-1990s. Thus standard
precautions are similar to universal precautions as they are designed to
reduce the risk of infection transmission from both recognized and
unrecognized sources of infection to patients and clinicians. Standard
precautions apply to contact with blood, all body fluids, secretions and
excretions except sweat, regardless of whether they contain blood,
non-intact skin and mucous membranes. |