Radiography & Infection Control Flashcards
7 cards from real EFDA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Radiography & Infection Control flashcards as text
What is the correct procedure for handling the lead apron between patients?
Answer: Wipe with an intermediate-level disinfectant
Lead aprons cannot be autoclaved or laundered; they must be wiped down with an EPA-registered intermediate-level disinfectant between patients.
Which of the following radiographic errors produces a clear, unexposed area on the processed film?
Answer: Cone cut (partial image)
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.
Bloodborne pathogen training for dental employees must be provided:
Answer: At initial employment and annually thereafter
OSHA's Bloodborne Pathogens Standard (29 CFR 1910.1030) requires employers to provide training at initial employment and annually to all at-risk employees.
When processing conventional dental radiographs, a film that appears too dark (overexposed) may result from:
Answer: Developer solution too concentrated or development time too long
Overdevelopment due to high developer temperature, excessive concentration, or prolonged development time causes excessive silver halide reduction, producing a dark film.
Which infection control step is required BEFORE seating the next patient in a radiography operatory?
Answer: Disinfect all clinical contact surfaces and apply surface barriers
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.
What is the biological effect that dental X-rays are most concerned with in terms of long-term risk?
Answer: Stochastic effects such as carcinogenesis
Stochastic effects, including the potential induction of cancer, are the primary long-term concern with low-dose dental X-ray exposure, as their probability increases with cumulative dose.
Which finding on a radiograph would most likely indicate the need for endodontic evaluation?
Answer: Periapical radiolucency at the root apex
A periapical radiolucency at the root apex indicates bone destruction around the apex, suggesting pulpal necrosis or abscess that typically requires endodontic (root canal) treatment.