California RDA Written Exam Practice Tests
Latest Update 2025-2026 50 Questions and 100%
Verified Correct Answers with Rationale
Guaranteed A+
What type of mechanical device is used to clean contaminated instruments prior
to sterilization?
o Hypersonic
o Ultrasonic
o Supersonic
o Subsonic
Quiz Preview
• 2.
When should chairside environmental barriers be changed?
o After every patient
o At the middle of and at the end of each day
o At the end of each day
o Immediately after they are touched
Correct Answer
A. After every patient
Explanation
Chairside environmental barriers should be changed after every patient to maintain
cleanliness and prevent cross-contamination. This ensures that each patient is provided
with a clean and hygienic environment during their dental treatment. Changing the
barriers regularly helps to minimize the risk of spreading infections and maintains a high
standard of infection control in the dental office.
Rate this question:
,1
• 3.
When should chairside environmental barriers be changed?
o After every patient
o At the middle of and at the end of each day
o At the end of each day
o Immediately after they are touched
Correct Answer
A. After every patient
Explanation
Chairside environmental barriers should be changed after every patient to maintain
cleanliness and prevent the spread of germs. This ensures that each patient is provided
with a clean and safe environment during their dental treatment. Changing the barriers
regularly helps to minimize the risk of cross-contamination between patients and
promotes infection control practices in the dental office.
Rate this question:
1
• 4.
An FMX can be taken with traditional X-ray film or with the digital radiology technique.
o True
o False
Correct Answer
A. True
Explanation
An FMX (Full Mouth X-ray) can indeed be taken with traditional X-ray film or with the
digital radiology technique. This means that dentists have the option to use either
method to capture a comprehensive view of a patient's teeth and surrounding
, structures. The traditional X-ray film involves exposing the film to X-rays, which creates
a physical image that needs to be developed. On the other hand, digital radiology uses
digital sensors to capture the X-ray image, which can then be viewed on a computer
screen. Both methods have their advantages and disadvantages, but they are both valid
options for taking an FMX.
Rate this question:
2
• 5.
The dentist has a duty to communicate truthfully. The principle expresses the concept
that professionals have a duty to be honest and trustworthy in their dealings with
people.
o True
o False
Correct Answer
A. True
Explanation
The principle mentioned in the passage states that dentists have a duty to be honest
and trustworthy in their communication with people. This means that they should always
communicate truthfully. Therefore, the correct answer is true.
Rate this question:
3
• 6.
The dentist should always perform a final check of the RDA-performed computer
impression prior to the final milling of a permanent restoration.
o True
o False
Correct Answer
A. True
Latest Update 2025-2026 50 Questions and 100%
Verified Correct Answers with Rationale
Guaranteed A+
What type of mechanical device is used to clean contaminated instruments prior
to sterilization?
o Hypersonic
o Ultrasonic
o Supersonic
o Subsonic
Quiz Preview
• 2.
When should chairside environmental barriers be changed?
o After every patient
o At the middle of and at the end of each day
o At the end of each day
o Immediately after they are touched
Correct Answer
A. After every patient
Explanation
Chairside environmental barriers should be changed after every patient to maintain
cleanliness and prevent cross-contamination. This ensures that each patient is provided
with a clean and hygienic environment during their dental treatment. Changing the
barriers regularly helps to minimize the risk of spreading infections and maintains a high
standard of infection control in the dental office.
Rate this question:
,1
• 3.
When should chairside environmental barriers be changed?
o After every patient
o At the middle of and at the end of each day
o At the end of each day
o Immediately after they are touched
Correct Answer
A. After every patient
Explanation
Chairside environmental barriers should be changed after every patient to maintain
cleanliness and prevent the spread of germs. This ensures that each patient is provided
with a clean and safe environment during their dental treatment. Changing the barriers
regularly helps to minimize the risk of cross-contamination between patients and
promotes infection control practices in the dental office.
Rate this question:
1
• 4.
An FMX can be taken with traditional X-ray film or with the digital radiology technique.
o True
o False
Correct Answer
A. True
Explanation
An FMX (Full Mouth X-ray) can indeed be taken with traditional X-ray film or with the
digital radiology technique. This means that dentists have the option to use either
method to capture a comprehensive view of a patient's teeth and surrounding
, structures. The traditional X-ray film involves exposing the film to X-rays, which creates
a physical image that needs to be developed. On the other hand, digital radiology uses
digital sensors to capture the X-ray image, which can then be viewed on a computer
screen. Both methods have their advantages and disadvantages, but they are both valid
options for taking an FMX.
Rate this question:
2
• 5.
The dentist has a duty to communicate truthfully. The principle expresses the concept
that professionals have a duty to be honest and trustworthy in their dealings with
people.
o True
o False
Correct Answer
A. True
Explanation
The principle mentioned in the passage states that dentists have a duty to be honest
and trustworthy in their communication with people. This means that they should always
communicate truthfully. Therefore, the correct answer is true.
Rate this question:
3
• 6.
The dentist should always perform a final check of the RDA-performed computer
impression prior to the final milling of a permanent restoration.
o True
o False
Correct Answer
A. True
