4Y052 DENTAL LAB CDC QUESTIONS WITH CORRECT ANSWERS 2026

4Y052 DENTAL LAB CDC QUESTIONS
WITH CORRECT ANSWERS 2026
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 intox eyes,x whichx canx causex eyestrain.



Whenx usingx PPE,x whatx physicalx limitationsx mustx thex userx consider?x -
x CORRECTx ANSWERx -

Vision,x depthx perception,x hearing,x dexterity,x reflexes,x weight,x andx reach

,x




Whenx isx ax developingx fetusx mostx susceptiblex tox environmentalx hazards?x -
CORRECTx ANSWERx -Firstx trimester



Whatx typex ofx earx protectionx providesx lessx protectionx thanx properlyx fittedx earx plugs?x
-
CORRECTx ANSWERx -Earmuffs

Whenx shouldx personnelx receivex hazardousx materialx training?x -x CORRECTx ANSWERx -
Uponx initialx assignmentx andx wheneverx ax newx materialx isx introducedx tox thex laboratory



Asx ax dentalx laboratoryx technician,x whatx arex thex commonx infectiousx agentsx youx mayx encoun
t
er?x -x CORRECTx ANSWERx -Bacteria,x fungi,x protozoa,x andx viruses.

Whatx arex thex twox categoriesx ofx fungi?x -x CORRECTx ANSWERx -
Yeastsx andx molds.

Listx thex sixx interrelatedx linksx ofx thex chainx ofx infectionx -x CORRECTx ANSWERx -
(1)x Portalx ofx entry.x (2)x Susceptiblex host.x (3)x Infectiousx agent.x (4)x Reservoir.x (5)x Portalx ofx exit
.
(6)x Modex ofx transmission

Whilex reviewingx thex chainx ofx infection,x whatx arex thex transmissionx modesx forx pathogens?x
-
CORRECTx ANSWERx -Contact,x droplet,x vehicle,x airborne,x andx vectors

Wherex isx thex mostx likelyx placex youx canx breakx thex chainx ofx infection?x -x CORRECTx ANSWERx -
Betweenx thex portalx ofx exitx ofx anx infectedx hostx andx thex portalx ofx entryx ofx anx uninfectedx ho
st

Whenx treatingx ax patientx withx AIDS,x whatx isx thex bestx defensex forx preventingx transmissionx o
f
the
Thexxdisease? -x CORRECT
biggestx xproblem ANSWERxxa-x casex isx notx knowingx ifx it'sx contaminatedx orx not.x Yourx be
x ofxxhandling
s
tx defensex isx tox usex properx infectionx controlx proceduresx onx everyx case.

,x




Whatx arex thex factorsx contributingx tox nosocomialx infections?x -x CORRECTx ANSWERx -
Patientx condition,x typex ofx treatmentx andx therapy,x exposure,x andx employeex carelessness



Whatx isx thex single,x mostx effectivex personalx hygienex practicex inx stoppingx diseasex transmissio
n
? -x CORRECTx ANSWERx -Handwashing



Whatx arex thex physicalx barriersx ofx isolationx fundamentals?x -x CORRECTx ANSWERx -
Thex unit,x masks,x gloves,x eyex protection,x andx equipment



Whatx arex thex threex typesx ofx transmission-basedx precautions?x -x CORRECTx ANSWERx -
Airborne,x droplet,x andx contactx transmission.



Whatx isx thex firstx stepx inx performingx ax taskx safely?x -x CORRECTx ANSWERx -
Planning.



Whenx usingx ax knife,x youx shouldx -x CORRECTx ANSWERx -cutx awayx fromx yourself

Whenx usingx acids,x youx shouldx workx nearx ax sinkx andx eyewashx stationx andx havex whatx neutral
i
zerx easilyx availablex -x CORRECTx ANSWERx -Bakingx soda

Painx andx irritationx inx whichx areax ofx thex eyex usuallyx indicatesx thex presencex ofx ax foreignx subs
t
ance?x -x CORRECTx ANSWERx -Conjunctiva

Whichx organx hasx ax tendencyx tox collectx toxicx materialsx overx ax longx periodx ofx time?x
-
CORRECTx ANSWERx -Kidney

Extremelyx smallx dustx particlesx canx remainx airbornex -x CORRECTx ANSWERx -
upx tox 10x hours