Dental Radiography Flashcards
6 cards from real Dental practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Dental Radiography flashcards as text
Digital dental radiography reduces radiation exposure compared to conventional film by approximately how much?
Answer: 50–80%
Digital sensors are significantly more sensitive than conventional film, allowing radiation dose reductions of approximately 50–80% while maintaining diagnostic image quality.
What is the purpose of the film speed (e.g., F-speed) classification in dental radiography?
Answer: Reflects the film's sensitivity to radiation
Film speed classification indicates the film's sensitivity (speed) to X-radiation; faster films (E and F speed) require less radiation exposure to produce an adequate image.
A 'ghost image' artifact on a panoramic radiograph is caused by what?
Answer: Radiopaque objects on the opposite side of the head
Ghost images appear when dense radiopaque objects (earrings, partial dentures) on one side of the head cast a blurred shadow on the opposite side of the panoramic image.
Which dental radiographic survey is indicated for a new adult patient with signs of generalized periodontal disease?
Answer: Full mouth series (FMX)
A full mouth series (FMX) of 18–21 images is recommended for comprehensive assessment of generalized periodontal disease, providing detail of all teeth and supporting bone.
What does the term 'periapical pathology' refer to on a dental radiograph?
Answer: Bone loss around the root tip
Periapical pathology refers to disease at or around the root apex, often appearing as a radiolucent area of bone destruction caused by pulpal necrosis or infection.
Which structure appears as a dense white radiopaque band on a periapical radiograph?
Answer: Lamina dura
The lamina dura is the compact cortical bone lining the tooth socket and appears as a dense radiopaque white line surrounding the root on a periapical radiograph.