California RDA Written Exam Practice Tests

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?

• Hypersonic
• Ultrasonic
• Supersonic
• Subsonic

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• 2.

When should chairside environmental barriers be changed?

• After every patient
• At the middle of and at the end of each day
• At the end of each day
• Immediately after they are touched

Correct Answer

• 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.

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• 3.

When should chairside environmental barriers be changed?

• After every patient
• At the middle of and at the end of each day
• At the end of each day
• Immediately after they are touched

Correct Answer

• 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.

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• 4.

An FMX can be taken with traditional X-ray film or with the digital radiology technique.

• True
• False

Correct Answer

• 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 2 / 3

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.

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• 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.

• True
• False

Correct Answer

• 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.

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• 6.

The dentist should always perform a final check of the RDA-performed computer impression prior to the final milling of a permanent restoration.

• True
• False

Correct Answer

• True
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