EFDA Radiography & Infection Control 4

Question 1

A foreshortened radiographic image is most likely the result of:

Accepted Answer

Too much vertical angulation

Answer

Foreshortening occurs when too much vertical angulation is used, causing the beam to project a compressed, shorter-than-actual image of the tooth.

Question 2

What is the purpose of using a position-indicating device (PID) during radiographic exposure?

Accepted Answer

To direct the X-ray beam and reduce scatter

Answer

The PID (position-indicating device) directs the central ray of the X-ray beam toward the film/sensor and helps collimate radiation to reduce patient exposure to scatter.

Question 3

Which precaution is MOST important when handling sharps contaminated with blood in the dental office?

Accepted Answer

Place used sharps immediately in a puncture-resistant sharps container

Answer

Used sharps must be immediately disposed of in an approved puncture-resistant sharps container to prevent needlestick injuries and bloodborne pathogen transmission.

Question 4

What is the primary advantage of digital radiography over conventional film radiography?

Accepted Answer

Reduced radiation exposure of up to 80%

Answer

Digital radiography can reduce radiation exposure by up to 80% compared to conventional film because digital sensors are much more sensitive to X-rays.

Question 5

Which standard precaution requires treating all patient blood and body fluids as potentially infectious?

Accepted Answer

Universal precautions

Answer

Universal precautions, expanded into Standard Precautions by the CDC, require treating all blood and body fluids from every patient as potentially infectious regardless of known disease status.

(EFDA) Expanded Function Dental Auxiliary Practice Test

(EFDA) Expanded Function Dental Auxiliary Practice Test

EFDA Radiography & Infection Control 4