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 intoc eyes,c whichc canc causec eyestrain.



Whenc usingc PPE,c whatc physicalc limitationsc mustc thec userc consider?c -c CORRECTc ANSWERc -
Vision,c depthc perception,c hearing,c dexterity,c reflexes,c weight,c andc reach

,c




Whenc isc ac developingc fetusc mostc susceptiblec toc environmentalc hazards?c -
CORRECTc ANSWERc -Firstc trimester



Whatc typec ofc earc protectionc providesc lessc protectionc thanc properlyc fittedc earc plugs?c -
CORRECTc ANSWERc -Earmuffs



Whenc shouldc personnelc receivec hazardousc materialc training?c -c CORRECTc ANSWERc -
Uponc initialc assignmentc andc wheneverc ac newc materialc isc introducedc toc thec laboratory



Asc ac dentalc laboratoryc technician,c whatc arec thec commonc infectiousc agentsc youc mayc encount
er?c -c CORRECTc ANSWERc -Bacteria,c fungi,c protozoa,c andc viruses.



Whatc arec thec twoc categoriesc ofc fungi?c -c CORRECTc ANSWERc -Yeastsc andc molds.



Listc thec sixc interrelatedc linksc ofc thec chainc ofc infectionc -c CORRECTc ANSWERc -
(1)c Portalc ofc entry.c (2)c Susceptiblec host.c (3)c Infectiousc agent.c (4)c Reservoir.c (5)c Portalc ofc exit.
(6)c Modec ofc transmission



Whilec reviewingc thec chainc ofc infection,c whatc arec thec transmissionc modesc forc pathogens?c -
CORRECTc ANSWERc -Contact,c droplet,c vehicle,c airborne,c andc vectors



Wherec isc thec mostc likelyc placec youc canc breakc thec chainc ofc infection?c -c CORRECTc ANSWERc -
Betweenc thec portalc ofc exitc ofc anc infectedc hostc andc thec portalc ofc entryc ofc anc uninfectedc host



Whenc treatingc ac patientc withc AIDS,c whatc isc thec bestc defensec forc preventingc transmissionc of
thec disease?c -c CORRECTc ANSWERc -
Thec biggestc problemc ofc handlingc ac casec isc notc knowingc ifc it'sc contaminatedc orc not.c Yourc bes
tc defensec isc toc usec properc infectionc controlc proceduresc onc everyc case.

,c




Whatc arec thec factorsc contributingc toc nosocomialc infections?c -c CORRECTc ANSWERc -
Patientc condition,c typec ofc treatmentc andc therapy,c exposure,c andc employeec carelessness



Whatc isc thec single,c mostc effectivec personalc hygienec practicec inc stoppingc diseasec transmission
? -c CORRECTc ANSWERc -Handwashing



Whatc arec thec physicalc barriersc ofc isolationc fundamentals?c -c CORRECTc ANSWERc -
Thec unit,c masks,c gloves,c eyec protection,c andc equipment



Whatc arec thec threec typesc ofc transmission-basedc precautions?c -c CORRECTc ANSWERc -
Airborne,c droplet,c andc contactc transmission.



Whatc isc thec firstc stepc inc performingc ac taskc safely?c -c CORRECTc ANSWERc -Planning.



Whenc usingc ac knife,c youc shouldc -c CORRECTc ANSWERc -cutc awayc fromc yourself



Whenc usingc acids,c youc shouldc workc nearc ac sinkc andc eyewashc stationc andc havec whatc neutrali
zerc easilyc availablec -c CORRECTc ANSWERc -Bakingc soda



Painc andc irritationc inc whichc areac ofc thec eyec usuallyc indicatesc thec presencec ofc ac foreignc subst
ance?c -c CORRECTc ANSWERc -Conjunctiva



Whichc organc hasc ac tendencyc toc collectc toxicc materialsc overc ac longc periodc ofc time?c -
CORRECTc ANSWERc -Kidney



Extremelyc smallc dustc particlesc canc remainc airbornec -c CORRECTc ANSWERc -upc toc 10c hours