CALIFORNIA RDA WRITTEN EXAM NEWEST 2026
ACTUAL EXAM TEST BANK| CA RDA WRITTEN EXAM
PREP WITH COMPLETE 500 REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ ALREADY
GRADED A+ (MOST RECENT!!)
1. According to the CDC, which infection control measure is
considered the most critical for reducing the transmission of
microbes in the healthcare setting?
A. Wearing gloves
B. Hand washing
C. Using chemical disinfectants
D. Sterilizing instruments
Correct Answer: B
Rationale: Hand washing is consistently cited by the CDC as the
single most effective way to prevent the spread of infections. It
mechanically removes pathogens and is the foundation of all
infection control protocols before and after patient contact.
2. A used dental anesthetic needle is an example of which
type of waste?
1
,A. General waste
B. Hazardous waste
C. Regulated waste
D. Infectious waste
Correct Answer: C
Rationale: According to OSHA, "regulated waste" includes
contaminated sharps (like needles and scalpels), human tissue,
and blood-soaked items that release blood when squeezed.
3. When putting on personal protective equipment (PPE),
which barrier should be put on last, just before patient care
begins?
A. Mask
B. Gown
C. Protective eyewear
D. Gloves
Correct Answer: D
Rationale: Gloves are donned immediately before the
procedure to prevent contamination from environmental surfaces.
If gloves are put on earlier, they may touch non-sterile surfaces
before touching the patient.
2
,4. How long should sterilization monitoring records (spore test
results) be kept according to the Dental Board of California?
A. 30 days
B. 6 months
C. 1 year
D. Indefinitely
Correct Answer: C
Rationale: While the CDC suggests checking local regulations,
the California Dental Board specifies that biological monitoring
records must be kept for a minimum of one year.
5. Which of the following is an example of an OSHA-required
"sharp with engineered injury protection" (SEIP)?
A. A scalpel with a removable blade
B. A laboratory knife
C. A self-sheathing needle attached to a dental anesthetic
syringe
D. An explorer with a sharp tip
Correct Answer: C
Rationale: The Needlestick Safety and Prevention Act requires
the use of devices that have built-in safety mechanisms. A self-
3
, sheathing needle retracts or covers the needle immediately after
use, reducing needlestick risk.
6. The primary reason a surgical face mask must be worn
during a dental procedure is to:
A. Protect the patient from the dental assistant's breath.
B. Protect the DHCP from exposure to spatter and aerosols.
C. Prevent the dental assistant from talking.
D. Filter the nitrous oxide in the air.
Correct Answer: B
Rationale: Masks protect mucous membranes (nose/mouth) from
splashes, spatter, and aerosols generated during dental
procedures, which contain blood and saliva.
7. According to the OSHA Bloodborne Pathogens Standard, a
contaminated sharps container should be:
A. Recyclable and clear.
B. Puncture resistant, leak-proof, and closable.
C. Small enough to fit in a pocket.
D. Made of paper to allow incineration.
Correct Answer: B
Rationale: The standard mandates that sharps containers be
puncture-resistant, leak-proof on sides and bottom, closable, and
4
ACTUAL EXAM TEST BANK| CA RDA WRITTEN EXAM
PREP WITH COMPLETE 500 REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ ALREADY
GRADED A+ (MOST RECENT!!)
1. According to the CDC, which infection control measure is
considered the most critical for reducing the transmission of
microbes in the healthcare setting?
A. Wearing gloves
B. Hand washing
C. Using chemical disinfectants
D. Sterilizing instruments
Correct Answer: B
Rationale: Hand washing is consistently cited by the CDC as the
single most effective way to prevent the spread of infections. It
mechanically removes pathogens and is the foundation of all
infection control protocols before and after patient contact.
2. A used dental anesthetic needle is an example of which
type of waste?
1
,A. General waste
B. Hazardous waste
C. Regulated waste
D. Infectious waste
Correct Answer: C
Rationale: According to OSHA, "regulated waste" includes
contaminated sharps (like needles and scalpels), human tissue,
and blood-soaked items that release blood when squeezed.
3. When putting on personal protective equipment (PPE),
which barrier should be put on last, just before patient care
begins?
A. Mask
B. Gown
C. Protective eyewear
D. Gloves
Correct Answer: D
Rationale: Gloves are donned immediately before the
procedure to prevent contamination from environmental surfaces.
If gloves are put on earlier, they may touch non-sterile surfaces
before touching the patient.
2
,4. How long should sterilization monitoring records (spore test
results) be kept according to the Dental Board of California?
A. 30 days
B. 6 months
C. 1 year
D. Indefinitely
Correct Answer: C
Rationale: While the CDC suggests checking local regulations,
the California Dental Board specifies that biological monitoring
records must be kept for a minimum of one year.
5. Which of the following is an example of an OSHA-required
"sharp with engineered injury protection" (SEIP)?
A. A scalpel with a removable blade
B. A laboratory knife
C. A self-sheathing needle attached to a dental anesthetic
syringe
D. An explorer with a sharp tip
Correct Answer: C
Rationale: The Needlestick Safety and Prevention Act requires
the use of devices that have built-in safety mechanisms. A self-
3
, sheathing needle retracts or covers the needle immediately after
use, reducing needlestick risk.
6. The primary reason a surgical face mask must be worn
during a dental procedure is to:
A. Protect the patient from the dental assistant's breath.
B. Protect the DHCP from exposure to spatter and aerosols.
C. Prevent the dental assistant from talking.
D. Filter the nitrous oxide in the air.
Correct Answer: B
Rationale: Masks protect mucous membranes (nose/mouth) from
splashes, spatter, and aerosols generated during dental
procedures, which contain blood and saliva.
7. According to the OSHA Bloodborne Pathogens Standard, a
contaminated sharps container should be:
A. Recyclable and clear.
B. Puncture resistant, leak-proof, and closable.
C. Small enough to fit in a pocket.
D. Made of paper to allow incineration.
Correct Answer: B
Rationale: The standard mandates that sharps containers be
puncture-resistant, leak-proof on sides and bottom, closable, and
4
