Card Set Information
what are the objectives of preventing transmissible disease?
protect patients and dental personnel
maintain healthy facilities
keep organized systems
prevent cross contamination
what contacts do standard precautions apply to?
body fluids (except sweat)
what are 3 other precautions that must be taken in applying standard precautions?
trasmission based (flu, tb, varicella_
transmission through skin contact
in the utero, the oral cavity is__________.
how are microorganisms transferred from the mother to the babies oral cavity?
true or false. as an infant grows, there is continuing introduction of microorganisms normal for an adult oral cavity.
where does the salivary bacteria come from?
dorsum of tongue
name 3 areas of the oral cavity that high counts of microorganisms are found
true or false. the intact mucous membrane of the oral cavity protects against infections to a degree.
name the 6 essential links for spreading infections
port of exit
mode of transportation
port of entry
where the invading organism lives and multiplies
water (from tubing)
port of exit
mode of escape from the reservoir
skin and mucous membrane
port of entry
mode of entry of the infectious agent into the new host
does not have immunity to invading infection
Name 7 factors that influence the development of infection
presence of infectious agent
number of organisms
duration of exposure
virulance of organism
immune status of the host
general physical health of the host
nutritional status of the host
name 4 factors that would alter the bodies normal defenses against infection
abnormal physical conditions, such as a defective heart valve
prostheses and transplants
How can dust borne organisms/airborne particles infect someone?
the opening and closing of doors sends airborne particles flying
large airborne particles
can contaminate dental instruments
controlled with surface disinfection
what size are true aerosol particles?
less than 50 micrometers, but most are less than 5
describe 3 characteristics of aerosols
can be solid or liquid
can be invisible or visible
can be suspended in the air for long periods of time
greater than 50 micrometers in size
heavier particles for short durations of time
occurs on objects, floors, and people
it is visible, especially after it lands
How are aerosols and spatter created?
during breathing, speaking, coughing, and sneezing
during intraoral procedures
from handpieces, ultrasonic
true or false, aerosols travel with air currents?
what does prevention of transmission depend on?
elimination or limitation of organisms
interruption of transmission (disinfection-break the chain)
protecion of susceptible host (PPE)
what are 2 pre procedural methods for prevention of transmission?
biofilm removal-polish first
antiseptic mouth rinse
name 5 ways to interrupt transmition
use rubber dam
manual instrumentation (no ultrasonic)
state the protocal for keeping the water clean
follow EPA standards for drinking water
run water through water lines
2 min at the start and end of day
30 seconds between pt.s
what is used during intraoral procedures to prevent transmission to the hygienist? And the pt?
PPE, masks, sheilds, eyewear