EFDA Radiography & Infection Control 5

Question 1

What is the correct procedure for handling the lead apron between patients?

Accepted Answer

Wipe with an intermediate-level disinfectant

Answer

Lead aprons cannot be autoclaved or laundered; they must be wiped down with an EPA-registered intermediate-level disinfectant between patients.

Question 2

Which of the following radiographic errors produces a clear, unexposed area on the processed film?

Accepted Answer

Cone cut (partial image)

Answer

A cone cut occurs when the PID is not centered over the film/sensor, leaving a clear, unexposed crescent-shaped area on the radiograph where X-rays did not reach.

Question 3

Bloodborne pathogen training for dental employees must be provided:

Accepted Answer

At initial employment and annually thereafter

Answer

OSHA's Bloodborne Pathogens Standard (29 CFR 1910.1030) requires employers to provide training at initial employment and annually to all at-risk employees.

Question 4

When processing conventional dental radiographs, a film that appears too dark (overexposed) may result from:

Accepted Answer

Developer solution too concentrated or development time too long

Answer

Overdevelopment due to high developer temperature, excessive concentration, or prolonged development time causes excessive silver halide reduction, producing a dark film.

Question 5

Which infection control step is required BEFORE seating the next patient in a radiography operatory?

Accepted Answer

Disinfect all clinical contact surfaces and apply surface barriers

Answer

All clinical contact surfaces must be disinfected with an EPA-registered hospital disinfectant and/or covered with fresh surface barriers before seating each new patient.

(EFDA) Expanded Function Dental Auxiliary Practice Test

(EFDA) Expanded Function Dental Auxiliary Practice Test

EFDA Radiography & Infection Control 5