4Y052 DENTAL LAB CDC QUESTIONS
WITH CORRECT ANSWERS 2025
What is the first step in safely performing laboratory tasks? - CORRECT ANSWER -Planning
When a fire occurs, you extinguish the fire by removing one of the three elements. What a
re the three elements of a fire? - CORRECT ANSWER -Fuel, O2, and heat
At a minimum, how wide should you arrange a walkway from furniture and equipment? -
CORRECT ANSWER -36 inches.
What are some examples of potential hazards in the laboratory? - CORRECT ANSWER -
Frayed wiring, loose connections, and improper grounding of electrical equipment
What are the types of burns you may encounter in the dental laboratory? -
CORRECT ANSWER -Thermal and chemical
What is the first indication of a foreign substance in the eye? - CORRECT ANSWER -
Pain and irritation of the conjunctiva and eyelids
What are the five major body systems affected by dental materials? - CORRECT ANSWER -
Integumentary, respiratory, nervous, digestive, and urinary
What size particles are emitted from dispersed smoke, aerosol, and fumes? -
CORRECT ANSWER -0.1 µm to 0.0001 µm
How long do the symptoms of MFF last? - CORRECT ANSWER -12 to 24 hours.
What are the types of dermatitis? - CORRECT ANSWER -Contact and allergic
,What are the symptoms of MMA overexposure? - CORRECT ANSWER -
Headache, dizziness, nausea, depression, drowsiness, low blood pressure, loss of coordinatio
n, and, in serious cases, unconsciousness.
How are the majority of pathogens transmitted? - CORRECT ANSWER -
Through blood and saliva.
What are the types of stress? - CORRECT ANSWER -Situational and developmental
What is the body's physical reaction to stress? - CORRECT ANSWER -
A heightened nervous system, increased muscle tension, and a release of adrenaline
What kinds of laboratory equipment commonly produce noise above 85 dB? -
CORRECT ANSWER -Air hoses, pneumatic chisels, high-
speed lathes, steam cleaners, and handpieces
What are the types of laboratory ventilation? - CORRECT ANSWER -General and exhaust
How high is the seat of your laboratory chair adjusted to provide maximum comfort and su
pport? - CORRECT ANSWER -
Chair height should be set to allow thighs to be parallel to the floor.
Why should a bench-top work surface be nonreflective? - CORRECT ANSWER -
To reduce light reflection into eyes, which can cause eyestrain.
When using PPE, what physical limitations must the user consider? - CORRECT ANSWER -
Vision, depth perception, hearing, dexterity, reflexes, weight, and reach
,When is a developing fetus most susceptible to environmental hazards? -
CORRECT ANSWER -First trimester
What type of ear protection provides less protection than properly fitted ear plugs? -
CORRECT ANSWER -Earmuffs
When should personnel receive hazardous material training? - CORRECT ANSWER -
Upon initial assignment and whenever a new material is introduced to the laboratory
As a dental laboratory technician, what are the common infectious agents you may encount
er? - CORRECT ANSWER -Bacteria, fungi, protozoa, and viruses.
What are the two categories of fungi? - CORRECT ANSWER -Yeasts and molds.
List the six interrelated links of the chain of infection - CORRECT ANSWER -
(1) Portal of entry. (2) Susceptible host. (3) Infectious agent. (4) Reservoir. (5) Portal of exit.
(6) Mode of transmission
While reviewing the chain of infection, what are the transmission modes for pathogens? -
CORRECT ANSWER -Contact, droplet, vehicle, airborne, and vectors
Where is the most likely place you can break the chain of infection? - CORRECT ANSWER -
Between the portal of exit of an infected host and the portal of entry of an uninfected host
When treating a patient with AIDS, what is the best defense for preventing transmission of
the disease? - CORRECT ANSWER -
The biggest problem of handling a case is not knowing if it's contaminated or not. Your bes
t defense is to use proper infection control procedures on every case.
, What are the factors contributing to nosocomial infections? - CORRECT ANSWER -
Patient condition, type of treatment and therapy, exposure, and employee carelessness
What is the single, most effective personal hygiene practice in stopping disease transmission
? - CORRECT ANSWER -Handwashing
What are the physical barriers of isolation fundamentals? - CORRECT ANSWER -
The unit, masks, gloves, eye protection, and equipment
What are the three types of transmission-based precautions? - CORRECT ANSWER -
Airborne, droplet, and contact transmission.
What is the first step in performing a task safely? - CORRECT ANSWER -Planning.
When using a knife, you should - CORRECT ANSWER -cut away from yourself
When using acids, you should work near a sink and eyewash station and have what neutrali
zer easily available - CORRECT ANSWER -Baking soda
Pain and irritation in which area of the eye usually indicates the presence of a foreign subst
ance? - CORRECT ANSWER -Conjunctiva
Which organ has a tendency to collect toxic materials over a long period of time? -
CORRECT ANSWER -Kidney
Extremely small dust particles can remain airborne - CORRECT ANSWER -up to 10 hours
WITH CORRECT ANSWERS 2025
What is the first step in safely performing laboratory tasks? - CORRECT ANSWER -Planning
When a fire occurs, you extinguish the fire by removing one of the three elements. What a
re the three elements of a fire? - CORRECT ANSWER -Fuel, O2, and heat
At a minimum, how wide should you arrange a walkway from furniture and equipment? -
CORRECT ANSWER -36 inches.
What are some examples of potential hazards in the laboratory? - CORRECT ANSWER -
Frayed wiring, loose connections, and improper grounding of electrical equipment
What are the types of burns you may encounter in the dental laboratory? -
CORRECT ANSWER -Thermal and chemical
What is the first indication of a foreign substance in the eye? - CORRECT ANSWER -
Pain and irritation of the conjunctiva and eyelids
What are the five major body systems affected by dental materials? - CORRECT ANSWER -
Integumentary, respiratory, nervous, digestive, and urinary
What size particles are emitted from dispersed smoke, aerosol, and fumes? -
CORRECT ANSWER -0.1 µm to 0.0001 µm
How long do the symptoms of MFF last? - CORRECT ANSWER -12 to 24 hours.
What are the types of dermatitis? - CORRECT ANSWER -Contact and allergic
,What are the symptoms of MMA overexposure? - CORRECT ANSWER -
Headache, dizziness, nausea, depression, drowsiness, low blood pressure, loss of coordinatio
n, and, in serious cases, unconsciousness.
How are the majority of pathogens transmitted? - CORRECT ANSWER -
Through blood and saliva.
What are the types of stress? - CORRECT ANSWER -Situational and developmental
What is the body's physical reaction to stress? - CORRECT ANSWER -
A heightened nervous system, increased muscle tension, and a release of adrenaline
What kinds of laboratory equipment commonly produce noise above 85 dB? -
CORRECT ANSWER -Air hoses, pneumatic chisels, high-
speed lathes, steam cleaners, and handpieces
What are the types of laboratory ventilation? - CORRECT ANSWER -General and exhaust
How high is the seat of your laboratory chair adjusted to provide maximum comfort and su
pport? - CORRECT ANSWER -
Chair height should be set to allow thighs to be parallel to the floor.
Why should a bench-top work surface be nonreflective? - CORRECT ANSWER -
To reduce light reflection into eyes, which can cause eyestrain.
When using PPE, what physical limitations must the user consider? - CORRECT ANSWER -
Vision, depth perception, hearing, dexterity, reflexes, weight, and reach
,When is a developing fetus most susceptible to environmental hazards? -
CORRECT ANSWER -First trimester
What type of ear protection provides less protection than properly fitted ear plugs? -
CORRECT ANSWER -Earmuffs
When should personnel receive hazardous material training? - CORRECT ANSWER -
Upon initial assignment and whenever a new material is introduced to the laboratory
As a dental laboratory technician, what are the common infectious agents you may encount
er? - CORRECT ANSWER -Bacteria, fungi, protozoa, and viruses.
What are the two categories of fungi? - CORRECT ANSWER -Yeasts and molds.
List the six interrelated links of the chain of infection - CORRECT ANSWER -
(1) Portal of entry. (2) Susceptible host. (3) Infectious agent. (4) Reservoir. (5) Portal of exit.
(6) Mode of transmission
While reviewing the chain of infection, what are the transmission modes for pathogens? -
CORRECT ANSWER -Contact, droplet, vehicle, airborne, and vectors
Where is the most likely place you can break the chain of infection? - CORRECT ANSWER -
Between the portal of exit of an infected host and the portal of entry of an uninfected host
When treating a patient with AIDS, what is the best defense for preventing transmission of
the disease? - CORRECT ANSWER -
The biggest problem of handling a case is not knowing if it's contaminated or not. Your bes
t defense is to use proper infection control procedures on every case.
, What are the factors contributing to nosocomial infections? - CORRECT ANSWER -
Patient condition, type of treatment and therapy, exposure, and employee carelessness
What is the single, most effective personal hygiene practice in stopping disease transmission
? - CORRECT ANSWER -Handwashing
What are the physical barriers of isolation fundamentals? - CORRECT ANSWER -
The unit, masks, gloves, eye protection, and equipment
What are the three types of transmission-based precautions? - CORRECT ANSWER -
Airborne, droplet, and contact transmission.
What is the first step in performing a task safely? - CORRECT ANSWER -Planning.
When using a knife, you should - CORRECT ANSWER -cut away from yourself
When using acids, you should work near a sink and eyewash station and have what neutrali
zer easily available - CORRECT ANSWER -Baking soda
Pain and irritation in which area of the eye usually indicates the presence of a foreign subst
ance? - CORRECT ANSWER -Conjunctiva
Which organ has a tendency to collect toxic materials over a long period of time? -
CORRECT ANSWER -Kidney
Extremely small dust particles can remain airborne - CORRECT ANSWER -up to 10 hours
