RDA EXAM TEST 2026 ACTUAL
EXAM QUESTIONS WITH
VERIFIED CORRECT ANSWERS
ALREADY GRADED A+
"How many teeth in the primary dentition? - CORRECT ANSWER=> 20"
"What is a common treatment used to arrest early caries in children? - CORRECT ANSWER=>
Silver diamine fluoride (SDF)"
"Which eruption pattern is typically first in children? - CORRECT ANSWER=> Lower laterals"
"When does the first permanent molar usually erupt? - CORRECT ANSWER=> 6 years old"
"What is the term for the space between the tooth and the inner lining of the cheek? -
CORRECT ANSWER=> Vestibule"
"What are the five basic steps of instrument processing? - CORRECT ANSWER=> Transport,
cleaning, packaging, sterilization, storage"
"What is the minimum temperature for a steam autoclave? - CORRECT ANSWER=> 250°F
(121°C) at 15 psi for 15-30 minutes"
"What does the term "overhang" refer to in a dental restoration? - CORRECT ANSWER=> Excess
restorative material that extends beyond the cavity margin"
"What is a wedge used for in restorative dentistry? - CORRECT ANSWER=> To prevent overhangs
and separate teeth for proper contact"
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,"What causes foreshortening on a dental radiograph? - CORRECT ANSWER=> (Too low or too
high) vertical angulation"
"Which agency enforces the Bloodborne Pathogens Standard? - CORRECT ANSWER=> OSHA"
"What's the best disinfectant level for surfaces contaminated with blood? - CORRECT
ANSWER=> Intermediate-level (e.g., EPA-registered hospital disinfectant with tuberculocidal
claim"
"How long must a dental assistant flush handpiece lines at the start of the day? - CORRECT
ANSWER=> 2 mins a day"
"What instrument is used to carve amalgam occlusal anatomy? - CORRECT ANSWER=> Discoid-
cleoid carver"
"What are the four zones in four-handed dentistry? - CORRECT ANSWER=> Operator, assistant,
static, transfer"
"What does a blue triangle stand for in charting? - CORRECT ANSWER=> Sealant"
"Which class of caries involves the interproximal surfaces of anterior teeth? - CORRECT
ANSWER=> Class III"
“Instruments with the greatest risk of transmission infections are - CORRECT ANSWER=> Critical
instruments"
"A single use item reduces the risk of disease transmission because it is - CORRECT ANSWER=>
Discarded and not reused"
"Safety data sheets are required by OSHA - CORRECT ANSWER=> Hazardous communication
standards"
"Are sealants the only preventative measure used - CORRECT ANSWER=> No"
"The OSHA hazardous communication standards is based on the premise that an employee has
the right to know about the - CORRECT ANSWER=> Chemicals in the office"
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, "What are the ways for sealant materials to harden - CORRECT ANSWER=> Self-cute , light cure
and polymerization"
"of the common medical emergencies in a dental setting the emergency were patient
experience, nausea, pounding heartbeat, and feeling warm is - CORRECT ANSWER=> Syncope"
"Torn gloves should be replaced - CORRECT ANSWER=> as soon as possible"
"Which of the following viral infections can be prevented through immunization - CORRECT
ANSWER=> Hepatitis B"
"An oral prophylaxis includes - CORRECT ANSWER=> removal of calculus and debris"
"To reduce the risk of disease transmission in the dental office, it is recommended to - CORRECT
ANSWER=> Use disposable Items whenever possible"
"The use of nitrous oxide and oxygen gases together together is known as what - CORRECT
ANSWER=> Inhalation sedation"
"Sealants are placed - CORRECT ANSWER=> pits and fissures"
"What is the purpose of selective polishing - CORRECT ANSWER=> to polish only teeth with
stain"
"What is the range of shelf life of sealant material? - CORRECT ANSWER=> 18 to 36 Months"
"Of the common medical emergencies in a dental setting the emergency where patient
experiences, bad mood, anxiety, and appear sweaty is - CORRECT ANSWER=> Hypoglycemic"
"Which of the below is the most commonly used in medical emergencies? - CORRECT
ANSWER=> Oxygen"
“primary purpose of orthodontic treatment - CORRECT ANSWER=> To align the teeth and jaws
to improve function and aesthetics."
"instrument used to place elastic ligatures - CORRECT ANSWER=> Mathieu pliers."
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EXAM QUESTIONS WITH
VERIFIED CORRECT ANSWERS
ALREADY GRADED A+
"How many teeth in the primary dentition? - CORRECT ANSWER=> 20"
"What is a common treatment used to arrest early caries in children? - CORRECT ANSWER=>
Silver diamine fluoride (SDF)"
"Which eruption pattern is typically first in children? - CORRECT ANSWER=> Lower laterals"
"When does the first permanent molar usually erupt? - CORRECT ANSWER=> 6 years old"
"What is the term for the space between the tooth and the inner lining of the cheek? -
CORRECT ANSWER=> Vestibule"
"What are the five basic steps of instrument processing? - CORRECT ANSWER=> Transport,
cleaning, packaging, sterilization, storage"
"What is the minimum temperature for a steam autoclave? - CORRECT ANSWER=> 250°F
(121°C) at 15 psi for 15-30 minutes"
"What does the term "overhang" refer to in a dental restoration? - CORRECT ANSWER=> Excess
restorative material that extends beyond the cavity margin"
"What is a wedge used for in restorative dentistry? - CORRECT ANSWER=> To prevent overhangs
and separate teeth for proper contact"
Page | 1
,"What causes foreshortening on a dental radiograph? - CORRECT ANSWER=> (Too low or too
high) vertical angulation"
"Which agency enforces the Bloodborne Pathogens Standard? - CORRECT ANSWER=> OSHA"
"What's the best disinfectant level for surfaces contaminated with blood? - CORRECT
ANSWER=> Intermediate-level (e.g., EPA-registered hospital disinfectant with tuberculocidal
claim"
"How long must a dental assistant flush handpiece lines at the start of the day? - CORRECT
ANSWER=> 2 mins a day"
"What instrument is used to carve amalgam occlusal anatomy? - CORRECT ANSWER=> Discoid-
cleoid carver"
"What are the four zones in four-handed dentistry? - CORRECT ANSWER=> Operator, assistant,
static, transfer"
"What does a blue triangle stand for in charting? - CORRECT ANSWER=> Sealant"
"Which class of caries involves the interproximal surfaces of anterior teeth? - CORRECT
ANSWER=> Class III"
“Instruments with the greatest risk of transmission infections are - CORRECT ANSWER=> Critical
instruments"
"A single use item reduces the risk of disease transmission because it is - CORRECT ANSWER=>
Discarded and not reused"
"Safety data sheets are required by OSHA - CORRECT ANSWER=> Hazardous communication
standards"
"Are sealants the only preventative measure used - CORRECT ANSWER=> No"
"The OSHA hazardous communication standards is based on the premise that an employee has
the right to know about the - CORRECT ANSWER=> Chemicals in the office"
Page | 2
, "What are the ways for sealant materials to harden - CORRECT ANSWER=> Self-cute , light cure
and polymerization"
"of the common medical emergencies in a dental setting the emergency were patient
experience, nausea, pounding heartbeat, and feeling warm is - CORRECT ANSWER=> Syncope"
"Torn gloves should be replaced - CORRECT ANSWER=> as soon as possible"
"Which of the following viral infections can be prevented through immunization - CORRECT
ANSWER=> Hepatitis B"
"An oral prophylaxis includes - CORRECT ANSWER=> removal of calculus and debris"
"To reduce the risk of disease transmission in the dental office, it is recommended to - CORRECT
ANSWER=> Use disposable Items whenever possible"
"The use of nitrous oxide and oxygen gases together together is known as what - CORRECT
ANSWER=> Inhalation sedation"
"Sealants are placed - CORRECT ANSWER=> pits and fissures"
"What is the purpose of selective polishing - CORRECT ANSWER=> to polish only teeth with
stain"
"What is the range of shelf life of sealant material? - CORRECT ANSWER=> 18 to 36 Months"
"Of the common medical emergencies in a dental setting the emergency where patient
experiences, bad mood, anxiety, and appear sweaty is - CORRECT ANSWER=> Hypoglycemic"
"Which of the below is the most commonly used in medical emergencies? - CORRECT
ANSWER=> Oxygen"
“primary purpose of orthodontic treatment - CORRECT ANSWER=> To align the teeth and jaws
to improve function and aesthetics."
"instrument used to place elastic ligatures - CORRECT ANSWER=> Mathieu pliers."
Page | 3
