NBDHE NBDHE Dental Radiography and Interpretation 2

Question 1

Which type of dental radiograph is most useful for evaluating the entire tooth including the apex and surrounding bone?

Accepted Answer

Periapical

Answer

Periapical radiographs capture the entire tooth from crown to apex along with surrounding alveolar bone.

Question 2

On a periapical radiograph, a radiolucent halo around the apex of a non-vital tooth most likely represents:

Accepted Answer

Periapical abscess or granuloma

Answer

A periapical radiolucency around a non-vital tooth typically indicates a periapical abscess, granuloma, or cyst.

Question 3

The paralleling technique for periapical radiographs requires the film or sensor to be placed:

Accepted Answer

Parallel to the long axis of the teeth with the central ray perpendicular

Answer

The paralleling technique positions the receptor parallel to the tooth's long axis with the X-ray beam directed perpendicular to both.

Question 4

Elongation of a tooth image on a periapical radiograph is caused by:

Accepted Answer

Insufficient vertical angulation

Answer

Insufficient (too little) vertical angulation causes elongation because the X-ray beam is directed too flat relative to the tooth.

Question 5

Which radiographic landmark appears as a radiopaque Y-shaped structure in the maxillary premolar region?

Accepted Answer

Inverted Y (junction of nasal fossa and maxillary sinus)

Answer

The inverted Y is formed by the junction of the floor of the nasal fossa and the anterior wall of the maxillary sinus, visible in the maxillary premolar area.

NBDHE Test Practice Test

NBDHE Test Practice Test

NBDHE NBDHE Dental Radiography and Interpretation 2