NBDHE Dental Radiography and Interpretation Flashcards

The radiopaque line that represents the floor of the maxillary sinus on a periapical radiograph is known as the:

Answer: Cortical boundary of the maxillary sinus

The cortical boundary of the maxillary sinus floor appears as a thin radiopaque line superimposed over the maxillary molar roots.

Which film speed is currently recommended by the ADA for intraoral radiography to minimize patient dose?

Answer: F-speed (Insight)

F-speed (Insight) film requires the least radiation exposure to produce a diagnostic image and is currently the fastest film speed recommended.

A periapical radiograph shows a radiolucent lesion at the apex of a mandibular first molar with intact lamina dura. Vitality testing is positive. The most likely diagnosis is:

Answer: Normal anatomic variant such as the mental foramen

A radiolucency near the apex of a vital tooth with intact lamina dura most likely represents superimposition of the mental foramen, a normal anatomic structure.

Which radiation protection device is most critical for the dental radiographer to wear during X-ray exposures?

Answer: Dosimeter badge

A dosimetry badge (personnel monitoring device) is the most critical protective measure because it records actual radiation exposure to ensure dose limits are not exceeded.

On a panoramic radiograph, the hyoid bone is typically visible:

Answer: Below the mandible at the level of the cervical vertebrae

The hyoid bone appears as a radiopaque horseshoe-shaped structure below the mandible, projected over the cervical spine region.

Density on a radiographic image refers to:

Answer: The overall blackness or darkness of the processed radiograph

Radiographic density is the degree of overall blackness or darkness of the processed film or digital image.

The cervical burnout artifact on a bitewing radiograph can be mistaken for:

Answer: Interproximal caries at the cervical region

Cervical burnout is a radiolucent artifact at the cervical area of teeth caused by the relatively lower density of that region, which can mimic interproximal caries.