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DANB Certified Dental Assistant (CDA) Practice Test
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Avg score: 33% • Most missed: “Which type of restoration would not require the use of a matrix band or celluloi…”

The DANB Certified Dental Assistant (CDA) exam consists of three sections - General Chairside Assistance, Infection Control and Dental Radiography - with a total of 320 multiple-choice questions. Total exam time is limited to four hours.

DANB Certified Dental Assistant (CDA) Practice Test
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25 Questions

1. What is a microorganism called that is capable of causing diseases?
2. Which proximal surface of a tooth is closest toward the midline of the body?
3. The T-Band matrix system is designed to be used on which teeth?
4. The assumption that all blood and body fluids are to be treated as if known to be infected is called?
5. The temporomandibular joint causes movement in which dental arch?
6. When a mouth is divided into fourths, the parts are referred to as:
7. Which tooth whitening option provides the fastest results?
8. Masks, eyewear with front and side protection, face shields and gloves are examples of what?
9. Why does digital radiography require less radiation than traditional x-rays?
10. Which of the following diseases can be spread through contaminated water supplies?
11. The labial surface is the facial tooth surface closest to which area?
12. What step helps prevent a large radiolucent area near the palate as seen on panoramic x-rays?
13. Dental assistants are not permitted to use which dental tool?
14. Which teeth are sometimes called the "eye" teeth?
15. Why should fingers not be used to hold x-ray film or sensors while taking radiographs?
16. A permanent dentition consists of how many teeth?
17. A lead apron with a thyroid collar will protect a patient from what type of radiation?
18. Which instrument was designed for taking radiographs of teeth with endodontic instruments inside of them?
19. Which of the following inflicts the most radiation on a patient?
20. Scrap amalgam falls under which classification of waste?
21. Which of the following is NOT a mode of disease transmission?
22. Using the Universal System of tooth designation, what tooth is #12?
23. Which type of restoration would not require the use of a matrix band or celluloid matrix strip?
24. Which of the following is not a main component of a panoramic x-ray unit?
25. Why are intermediate restorations sometimes used in dentistry?

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