Question 1

Can dental radiographs be taken in edentulous areas?

Accepted Answer

Yes. The normal mucosa of the

Question 2

Anatomical limitations may require that the radiographer knowledgably alter which of the following to obtain a diagnostic image?

Accepted Answer

A)  Horizontal angulation 
B)  Vertical angulation 
C)  Positioning of the image receptor 
D)  All of the above 
A)  Horizontal angulation 
B)  Vertical angulation 
C)  Positioning of the image receptor 
D)  All of the above

Question 3

Radiographs are a two-dimensional representation of three-dimensional objects.

Accepted Answer

A) True 
 B)False

Question 4

Which localization technique requires the exposure of only one radiograph?

Accepted Answer

A)  The definitive evaluation method 
B)  The right-angle method 
C)  The tube-shift method 
A)  The definitive evaluation method 
B)  The right-angle method 
C)  The tube-shift method

Question 5

If the vertical angulation is not increased when exposing periapical radiographs of a patient with a low palatal vault, the cusps of the crowns may be cut off of the image.

Accepted Answer

A) True 
 B)False

Question 6

The exposure settings for the maxillary molar region should be higher than those used in the mandibular anterior region.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following statements regarding film duplication is FALSE?

Accepted Answer

A)  The film duplicator machine uses an ultraviolet light source. 
B)  It is possible to duplicate a single film or a full mouth series at a single printing. 
C)  Duplication must be performed in the darkroom under safelight conditions. 
D)  Standard radiographic film is used in the duplication process. 
A)  The film duplicator machine uses an ultraviolet light source. 
B)  It is possible to duplicate a single film or a full mouth series at a single printing. 
C)  Duplication must be performed in the darkroom under safelight conditions. 
D)  Standard radiographic film is used in the duplication process.

Question 8

Which of the following statements regarding localization methods is FALSE?

Accepted Answer

A)  In the definitive evaluation method, objects on the buccal surface of the tooth will appear more clear and distinct on the image than objects on the lingual. 
B)  To apply the tube-shift method, two radiographs are needed. 
C)  The occlusal radiograph can identify whether an impacted tooth is located on the buccal or lingual. 
D)  The definitive method of localization is the least reliable. 
A)  In the definitive evaluation method, objects on the buccal surface of the tooth will appear more clear and distinct on the image than objects on the lingual. 
B)  To apply the tube-shift method, two radiographs are needed. 
C)  The occlusal radiograph can identify whether an impacted tooth is located on the buccal or lingual. 
D)  The definitive method of localization is the least reliable.

Question 9

Looking at a full mouth series of radiographs you note that an impacted retained primary root tip can be observed between the right mandibular second premolar and the first molar in the premolar periapical radiograph. You note that the root tip appears to have "moved" mesially in the molar periapical radiograph. Which of the following is true regarding the impacted retained primary root tip?

Accepted Answer

A)  It is located on the buccal. 
B)  It is located on the lingual. 
C)  An additional radiograph would be required to determine the buccal or lingual location of the impacted retained primary root tip. 
A)  It is located on the buccal. 
B)  It is located on the lingual. 
C)  An additional radiograph would be required to determine the buccal or lingual location of the impacted retained primary root tip.

Question 10

Disto-oblique periapical radiographs are indicated for each of the following EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Suspected pathology located in the tuberosity area 
B)  Imaging impacted third molars 
C)  A patient who cannot tolerate posterior placement of the image receptor 
D)  Detection of interproximal caries 
A)  Suspected pathology located in the tuberosity area 
B)  Imaging impacted third molars 
C)  A patient who cannot tolerate posterior placement of the image receptor 
D)  Detection of interproximal caries

Question 11

The mucosa over tori is thick and calloused, so an image receptor can usually be comfortably placed on top of tori.

Accepted Answer

A) True 
 B)False

Question 12

Disto-oblique periapical radiographs are valuable in detecting impacted third molars.

Accepted Answer

A) True 
 B)False

Question 13

Due to anatomy a premolar bitewing radiograph will almost always exhibit overlap between the:

Accepted Answer

A)  distal of the lateral incisor and the mesial of the canine. 
B)  distal of the canine and the mesial of the first premolar. 
C)  distal of the first premolar and mesial of the second premolar. 
D)  distal of the second premolar and mesial of the first molar. 
A)  distal of the lateral incisor and the mesial of the canine. 
B)  distal of the canine and the mesial of the first premolar. 
C)  distal of the first premolar and mesial of the second premolar. 
D)  distal of the second premolar and mesial of the first molar.

Question 14

Should exposure settings for edentulous areas be the same as for areas with teeth present?

Accepted Answer

No. Exposure settings for eden

Question 15

Which localization technique requires the exposure of an occlusal radiograph?

Accepted Answer

A)  The definitive evaluation method 
B)  The right-angle method 
C)  The tube-shift method 
A)  The definitive evaluation method 
B)  The right-angle method 
C)  The tube-shift method

Question 16

Localization methods provide a way for the radiographer to read a third dimension into two-dimensional radiographs.

Accepted Answer

A) True 
 B)False

Question 17

Periapical radiographs of an edentulous ridge should be exposed with the bisecting technique.

Accepted Answer

A) True 
 B)False

Question 18

Precise positioning of the image receptor and accurate angulation will eliminate overlap between the canine and first premolar on a canine periapical radiograph.

Accepted Answer

A) True 
 B)False

Question 19

For a mandibular molar disto-oblique radiograph, the horizontal angulation is shifted so that the x-ray beam intersects the image receptor obliquely:

Accepted Answer

A)  5 degrees from the mesial. 
B)  10 degrees from the mesial. 
C)  5 degrees from the distal. 
D)  10 degrees from the distal. 
A)  5 degrees from the mesial. 
B)  10 degrees from the mesial. 
C)  5 degrees from the distal. 
D)  10 degrees from the distal.

Question 20

Which of the following results in a fuzzy duplicate radiographic image?

Accepted Answer

A)  Setting the exposure timer too short 
B)  Setting the exposure timer too long 
C)  Leaving the viewbox light on when opening the box of duplicating film 
D)  Leaving the original radiographs in the film mount when duplicating 
A)  Setting the exposure timer too short 
B)  Setting the exposure timer too long 
C)  Leaving the viewbox light on when opening the box of duplicating film 
D)  Leaving the original radiographs in the film mount when duplicating

Exam 28: Radiographic Techniques for Patients With Special Needs

Can dental radiographs be taken in edentulous areas?

Anatomical limitations may require that the radiographer knowledgably alter which of the following to obtain a diagnostic image?

Radiographs are a two-dimensional representation of three-dimensional objects.

Which localization technique requires the exposure of only one radiograph?

If the vertical angulation is not increased when exposing periapical radiographs of a patient with a low palatal vault, the cusps of the crowns may be cut off of the image.

The exposure settings for the maxillary molar region should be higher than those used in the mandibular anterior region.

Which of the following statements regarding film duplication is FALSE?

Which of the following statements regarding localization methods is FALSE?

Disto-oblique periapical radiographs are indicated for each of the following EXCEPT one. Which one is the EXCEPTION?

The mucosa over tori is thick and calloused, so an image receptor can usually be comfortably placed on top of tori.

Disto-oblique periapical radiographs are valuable in detecting impacted third molars.

Due to anatomy a premolar bitewing radiograph will almost always exhibit overlap between the:

Should exposure settings for edentulous areas be the same as for areas with teeth present?

Which localization technique requires the exposure of an occlusal radiograph?

Localization methods provide a way for the radiographer to read a third dimension into two-dimensional radiographs.

Periapical radiographs of an edentulous ridge should be exposed with the bisecting technique.

Precise positioning of the image receptor and accurate angulation will eliminate overlap between the canine and first premolar on a canine periapical radiograph.

For a mandibular molar disto-oblique radiograph, the horizontal angulation is shifted so that the x-ray beam intersects the image receptor obliquely:

Which of the following results in a fuzzy duplicate radiographic image?

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 Specific Oral Conditions

Radiographic Techniques

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