Quiz #1 Flashcards Preview

Rad 211: Dental Radiography > Quiz #1 > Flashcards

Flashcards in Quiz #1 Deck (16)
Loading flashcards...
0

A radiograph that has ____ is said to have low contrast
A) dark overall appearance
B) very light overall appearance
C) many shades of gray
D) very dark areas and very light areas

C) many shades of gray

1

The range of useful densities seen on a dental radiograph is termed the
A) film contrast
B) subject contrast
C) scale of contrast
D) kilovoltage peak

C) scale of contrast

2

Which of the following choices would result in an increased magnification of the radiographic image?
A) increased target-film distance
B) decreased object-film distance
C) increased object-film distance
D) both A and B

C) increased object-film distance

3

The film emulsion is composed of a homogenous mixture of
A) calcium tungstate
B) gelatin and barium salt crystals
C) gelatin and silver halide crystals
D) primer and silver halide crystals

C) gelatin and silver halide crystals

4

The identification dot is used to:
A) determine film orientation
B) identify whether or not a film has been exposed
C) indicate the side of the film with emulsion
D) identify whether the film is D-speed or F-speed film

A) determine film orientation

5

What is the purpose of the lead foil sheet found within the film packet?
A) to cover the film and shield the film from light
B) to protect the film from moisture
C) to shield the film from primary radiation emitted by the X-ray tubehead
D) to shield the film from secondary backscattered radiation

D) to shield the film from secondary backscattered radiation

6

A #__ size film is a standard adult periapical film
A) 0
B) 1
C) 2
D) 3

C) 2

7

Which of the following film speed is the fastest film currently available?
A) c-speed film
B) d-speed film
C) e-speed film
D) f-speed film

D) f-speed film

8

Cortical bone is also referred to as
A) trabecular bone
B) spongy bone
C) cancellous bone
D) compact bone

D) compact bone

9

___ bone appears predominantly radiopaque, and ___ bone appears predominantly radiolucent.
A) cortical, cancellous
B) cancellous, corticala
C) trabecular, compact
D) spongy, cortical

D) spongy, cortical

10

A ____ is a tubelike passageway through bone that contains nerves and blood vessels.
A) canal
B) foramen
C) fossa
D) sinus

A) canal

11

A suture is a/n
A) movable joint between any two bones in the body
B) immovable joint between any two bones in the body
C) movable joint between two bones in the skull
D) immovable joint between two bones in the skull

D) immovable joint between two bones in the skull

12

The ___ is a linear prominence of bone extending from the molar region downward on the internal surface of the mandible.
A) external oblique ridge
B) mylohyloid ridge
C) internal oblique ridge
D) symphysis

B) mylohyloid ridge

13

Which of the following tooth structures is most radiopaque?
A) enamel
B) dentin
C) cementum
D) pulp

A) enamel

14

On a dental radiographic, the periodontal ligament space (PDL) appears as a ___ line around the root of the tooth
A) thin radiopaque
B) thin radiolucent
C) wide radiopaque
D) wide radiolucent

B) thin radiolucent

15

Periapical radiographs must show the entire crowns and roots of the teeth being examined as well as ___ to ___ mm beyond the root apices
A) 0.1, 0.5
B) 1.0, 2.0
C) 2.0, 3.0
D) 5.0, 5.0

C) 2.0, 3.0