Question 1

Orthodontists frequently use extraoral radiographs.

Accepted Answer

A) True 
 B)False  True

Question 2

Certain darkroom safelights that are safe for intraoral films may not be safe for extraoral films.

Accepted Answer

A) True 
 B)False  True

Question 3

What type of gloves are required when handling extraoral film in the darkroom?

Accepted Answer

None

Question 4

Of what is the back cover of a rigid extraoral film cassette constructed?

Accepted Answer

Metal. The back cove

Question 5

How many intensifying screens are inside a cassette?

Accepted Answer

Two. Inten

Question 6

When placing a film into a cassette, it should be slid across the intensifying screens to ensure that it lies as close to the screens as possible.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following statements regarding intensifying screens is correct?

Accepted Answer

A)  The larger the crystal size, the more radiation required to produce an image. 
B)  The thicker the emulsion, the faster the speed of the screen. 
C)  Larger crystals produce an image with greater resolution than smaller crystals. 
D)  Calcium tungstate crystals produce a latent image with less radiation exposure than rare earth screens. 
A)  The larger the crystal size, the more radiation required to produce an image. 
B)  The thicker the emulsion, the faster the speed of the screen. 
C)  Larger crystals produce an image with greater resolution than smaller crystals. 
D)  Calcium tungstate crystals produce a latent image with less radiation exposure than rare earth screens.

Question 8

Extraoral radiographs cannot be substituted for intraoral radiographs.

Accepted Answer

A) True 
 B)False

Question 9

What is the purpose of a Waters projection?

Accepted Answer

Images the maxillary, frontal, and ethmo

Question 10

A cephalometric radiograph images the entire skull from the side and is often called a "lateral cephalometric radiograph."

Accepted Answer

A) True 
 B)False

Question 11

Do extraoral films have an embossed identification dot to determine the right and left sides?

Accepted Answer

No. Extraoral films are identi

Question 12

What is a lateral cephalometric radiograph?

Accepted Answer

A lateral skull projection made with the

Question 13

Which of the following determines the exposure factors for extraoral techniques?

Accepted Answer

A)  Intensifying screen-film combination 
B)  The patient's size and tissue density 
C)  Target-film distance 
D)  All of the above 
A)  Intensifying screen-film combination 
B)  The patient's size and tissue density 
C)  Target-film distance 
D)  All of the above

Question 14

Extraoral film is packaged in a similar manner to intraoral films.

Accepted Answer

A) True 
 B)False

Question 15

Which of these dental practitioners would most likely use a lateral cephalometric radiograph to assess growth and development?

Accepted Answer

A)  A general practitioner 
B)  An orthodontist 
C)  A periodontist 
D)  An endodontist 
A)  A general practitioner 
B)  An orthodontist 
C)  A periodontist 
D)  An endodontist

Question 16

Rare earth screens give off a blue to violet fluorescent light and must be paired with blue-light-sensitive film.

Accepted Answer

A) True 
 B)False

Question 17

A transcranial radiograph evaluates the maxillary, frontal, and ethmoid sinuses.

Accepted Answer

A) True 
 B)False

Question 18

Extraoral films are more sensitive to light than intraoral films.

Accepted Answer

A) True 
 B)False

Question 19

What is the purpose of the lateral jaw radiograph?

Accepted Answer

To examine the posterior regions of the

Question 20

Which of these statements regarding cassettes is FALSE?

Accepted Answer

A)  A rigid cassette has a front and back cover joined together with a hinge. 
B)  The front and back covers of rigid cassettes are constructed of plastic to permit the passage of x-rays. 
C)  Cassettes hold the intensifying screens in close contact with the film. 
D)  A pair of intensifying screens is located inside the front and back covers of a rigid cassette. 
A)  A rigid cassette has a front and back cover joined together with a hinge. 
B)  The front and back covers of rigid cassettes are constructed of plastic to permit the passage of x-rays. 
C)  Cassettes hold the intensifying screens in close contact with the film. 
D)  A pair of intensifying screens is located inside the front and back covers of a rigid cassette.

Exam 29: Radiographic Techniques for Specific Oral Conditions

Orthodontists frequently use extraoral radiographs.

Certain darkroom safelights that are safe for intraoral films may not be safe for extraoral films.

What type of gloves are required when handling extraoral film in the darkroom?

Of what is the back cover of a rigid extraoral film cassette constructed?

How many intensifying screens are inside a cassette?

When placing a film into a cassette, it should be slid across the intensifying screens to ensure that it lies as close to the screens as possible.

Which of the following statements regarding intensifying screens is correct?

Extraoral radiographs cannot be substituted for intraoral radiographs.

What is the purpose of a Waters projection?

A cephalometric radiograph images the entire skull from the side and is often called a "lateral cephalometric radiograph."

Do extraoral films have an embossed identification dot to determine the right and left sides?

What is a lateral cephalometric radiograph?

Which of the following determines the exposure factors for extraoral techniques?

Extraoral film is packaged in a similar manner to intraoral films.

Which of these dental practitioners would most likely use a lateral cephalometric radiograph to assess growth and development?

Rare earth screens give off a blue to violet fluorescent light and must be paired with blue-light-sensitive film.

A transcranial radiograph evaluates the maxillary, frontal, and ethmoid sinuses.

Extraoral films are more sensitive to light than intraoral films.

What is the purpose of the lateral jaw radiograph?

Which of these statements regarding cassettes is FALSE?

Dental Radiography: Historical Perspective and Future Trends

Characteristics and Measurement of Radiation

The Dental X-Ray Machine: Components and Function

Factors Affecting Radiographic Quality

Effects of Radiation Exposure

Radiation Protection

Dental X-Ray Film and Processing Methods

Digital Radiography and Image Acquisition

Infection Control

Legal and Ethical Responsibilities

Patient Relations and Education

Introduction to Radiographic Examinations

The Periapical Examinationparalleling Technique

The Periapical Examinationbisecting Technique

The Bitewing Examination

The Occlusal Examination

The Panoramic Examination

Identifying and Correcting Undiagnostic Radiographs

Quality Control and Environmental Safety in Dental Radiography

Image Orientation and Introduction to Interpretation

Recognizing Normal Radiographic Anatomy Intraoral Radiographs

Recognizing Normal Radiographic Anatomy Panoramic Radiographs

Radiographic Appearance of Dental Materials and Foreign Objects

The Use of Radiographs in the Detection of Dental Caries

The Use of Radiographs in the Evaluation of Periodontal Diseases

Describing Radiographic Anomalies, Lesions, and Opportunistic Screening

Pediatric Radiographic Techniques

Radiographic Techniques for Patients With Special Needs

Radiographic Techniques

Filters