Chapter 9 Infection control

Question 1

Chain of infection

Question 2

▪ Microorganism capable of causing disease
▪ Bacteria and viruses

Answer 2

pathogen

Question 3

For infection to occur, the following must be present

Answer 3

A susceptible host (not immune)
▪ Disease-causing microorganisms (pathogens)
▪ Sufficient numbers of pathogens to initiate infection
(reservoir )
▪ Appropriate routes (portals) for a pathogen to exit
a reservoir and enter a host
▪ A mode of transmission

Question 4

Routes of transmission include

Answer 4

Direct contact with pathogens
▪ Airborne contaminants
▪ Indirect contact with contaminated objects

Question 5

Occupational Safety and Health Administration
▪ Regulatory role

Answer 5

ohsa

Question 6

CDC

Answer 6

advisory

Question 7

Can be used to disinfect non-critical equipment,
such as the x-ray tube head and PID

Answer 7

Intermediate-level disinfectant

Question 8

critical

Answer 8

penetrates soft tissues
dental instruments

Question 9

semicrital

Answer 9

touches oral mucosa
holders
sensors
psp plates

Question 10

noncritical

Answer 10

does not touch mucose membranes
mouse
control panel

Question 11

To avoid contamination, dispense intraoral film
packets just prior to use in a disposable container.

Answer 11

introaral dental film

Question 12

Protocol during the radiographic procedure

Answer 12

Patient preparation
▪ Prepare the treatment area and ready the supplies
prior to seating the patient.
▪ Provide the patient with an optional antimicrobial
mouth rinse.
▪ Have the patient remove any items that may
interfere with the procedure.
▪ Drape the patient with a lead/lead equivalent apron
and thyroid collar.

Question 13

Management of PSP plates

Answer 13

PSP plates must be protected from light exposure
by placing in a light-tight box.
▪ Holding the PSP plate directly over the transfer
box, carefully tear the plastic by gripping the
corners on either side of the notched edge and
allow the plate to drop into the box.
▪ Do not touch the plate
with gloved hands.

Question 14

Protocol for film with barrier envelopes

Answer 14

Tear open the plastic barrier allowing the film packet
to drop.
– Be careful to not touch the film packet.
– Using clean, dry hands or new treatment gloves, open
film packets and place the films into the automatic
processor or prepare to process manuall

Question 15

Never slide gloved hands or push items through the ..

Answer 15

light tight baffles