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
Which type of dental radiograph is most useful for detecting interproximal caries in posterior teeth?
Answer: Bitewing
Bitewing radiographs are specifically designed to show the crowns of upper and lower posterior teeth on a single film, making them ideal for detecting interproximal caries.
When sterilizing dental instruments, which method is considered the gold standard?
Answer: Steam autoclave
Steam autoclave (steam under pressure) is the most reliable and widely accepted method for sterilizing dental instruments.
What is the recommended exposure setting for a bitewing radiograph on an adult patient with an average build?
Answer: Same settings as a periapical radiograph
Bitewing radiographs use the same kilovoltage and milliampere settings as periapical radiographs; only the film/sensor placement and angulation differ.
Which personal protective equipment (PPE) must be worn when exposing dental radiographs?
Answer: Gloves, mask, and protective eyewear
OSHA and infection control guidelines require gloves, mask, and protective eyewear when exposing radiographs due to contact with patient saliva and potential aerosol exposure.
A patient's thyroid collar is omitted during bitewing radiographs. What is the primary concern?
Answer: Unnecessary radiation to the thyroid gland
The thyroid gland is radiosensitive, and omitting the thyroid collar unnecessarily exposes it to ionizing radiation during dental radiography.
Which disinfectant classification is required for clinical contact surfaces in the dental operatory between patients?
Answer: Intermediate-level disinfectant
Intermediate-level disinfectants are required for clinical contact surfaces because they kill mycobacteria, most viruses, and vegetative bacteria.
What does the ALARA principle stand for in radiography?
Answer: As Low As Reasonably Achievable
ALARA stands for 'As Low As Reasonably Achievable' and guides dental professionals to minimize patient radiation exposure while obtaining diagnostic-quality images.