Question 1

What is the ideal design of a paralleling image receptor holder?

Accepted Answer

A)  A short bite block and an L-shaped backing 
B)  A long bite block and an L-shaped backing 
C)  A short bite block and a 105-degree backing 
D)  A long bite block and a 105-degree backing 
A)  A short bite block and an L-shaped backing 
B)  A long bite block and an L-shaped backing 
C)  A short bite block and a 105-degree backing 
D)  A long bite block and a 105-degree backing

Question 2

Anterior periapical radiographs should be positioned in the oral cavity with the long dimension ___________, and posterior periapical radiographs should be positioned in the oral cavity with the long dimension __________.

Accepted Answer

A)  vertical, horizontal 
B)  horizontal, vertical 
C)  horizontal, horizontal 
D)  vertical, vertical 
A)  vertical, horizontal 
B)  horizontal, vertical 
C)  horizontal, horizontal 
D)  vertical, vertical

Question 3

A patient may bite down on a sterilized cotton roll that is placed on the same side of the bite block as the teeth to provide stablization and add to patient comfort.

Accepted Answer

A) True 
 B)False

Question 4

When using the paralleling technique, the patient must bite down on the image receptor holder bite block as far away from the teeth as possible with the exception of which area?

Accepted Answer

A)  Maxillary anteriors 
B)  Mandibular canines 
C)  Maxillary premolars 
D)  Mandibular molars 
A)  Maxillary anteriors 
B)  Mandibular canines 
C)  Maxillary premolars 
D)  Mandibular molars

Question 5

With the paralleling technique, where is the central ray directed?

Accepted Answer

Perpendicular (at a right angle) to the

Question 6

Each of the following statements regarding the principles of the paralleling technique is correct EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Parallel placement of the image receptor is accomplished using an image receptor holder. 
B)  The central ray of the x-ray beam is directed perpendicular to both the teeth and the image receptor. 
C)  The patient is directed to hold the image receptor in the mouth with a finger or thumb. 
D)  The image receptor is placed parallel to the long axes of the teeth of interest. 
A)  Parallel placement of the image receptor is accomplished using an image receptor holder. 
B)  The central ray of the x-ray beam is directed perpendicular to both the teeth and the image receptor. 
C)  The patient is directed to hold the image receptor in the mouth with a finger or thumb. 
D)  The image receptor is placed parallel to the long axes of the teeth of interest.

Question 7

The paralleling technique must achieve parallelism by placing the image receptor:

Accepted Answer

A)  away from the crowns of the teeth. 
B)  away from the root tips of the teeth. 
C)  closer to the crowns of the teeth. 
D)  closer to the root tips of the teeth. 
A)  away from the crowns of the teeth. 
B)  away from the root tips of the teeth. 
C)  closer to the crowns of the teeth. 
D)  closer to the root tips of the teeth.

Question 8

Centering the image receptor to line up behind the central and lateral incisors to include recording the mesial halves of the canines if using a size #2 image receptor describes the placement of the image receptor for which periapical radiograph?

Accepted Answer

A)  Central incisor 
B)  Canine 
C)  Premolar 
D)  Molar 
A)  Central incisor 
B)  Canine 
C)  Premolar 
D)  Molar

Question 9

Image receptor holders designed for use with the paralleling technique usually have a short bite block.<KT>

Accepted Answer

A) True 
 B)False

Question 10

How is the correct point of entry achieved when using the paralleling technique?

Accepted Answer

The point of entry for directing the cen

Question 11

The paralleling technique is preferred over the bisecting technique.

Accepted Answer

A) True 
 B)False

Question 12

When using the paralleling technique, insufficient vertical angulation will result in loss of the image of the crowns.

Accepted Answer

A) True 
 B)False

Question 13

What is the ideal target-image receptor distance used with the paralleling technique?

Accepted Answer

A)  8 inches (20.5 cm) 
B)  12 inches (30 cm) 
C)  16 inches (41 cm) 
A)  8 inches (20.5 cm) 
B)  12 inches (30 cm) 
C)  16 inches (41 cm)

Question 14

Excessive vertical angulation when using the paralleling technique results in:

Accepted Answer

A)  cutting off incisal/occlusal edges. 
B)  cutting off the apices. 
C)  foreshortened images of the teeth. 
D)  elongated images of the teeth. 
A)  cutting off incisal/occlusal edges. 
B)  cutting off the apices. 
C)  foreshortened images of the teeth. 
D)  elongated images of the teeth.

Question 15

Comparing the paralleling technique with the bisecting technique, which of the following statements is correct?

Accepted Answer

A)  The paralleling technique is easy to achieve on all patients. 
B)  Proficiency should be achieved in both techniques. 
C)  The bisecting technique is more likely to be uncomfortable for the patient. 
D)  Once the full mouth series procedure is started, the radiographer must continue with the bisecting or the paralleling technique and not mix the two. 
A)  The paralleling technique is easy to achieve on all patients. 
B)  Proficiency should be achieved in both techniques. 
C)  The bisecting technique is more likely to be uncomfortable for the patient. 
D)  Once the full mouth series procedure is started, the radiographer must continue with the bisecting or the paralleling technique and not mix the two.

Question 16

What is the preferred target-surface distance when using the paralleling technique?

Accepted Answer

A) True 
 B)False

Question 17

Which of these image receptor holders is NOT designed for use with the paralleling technique?

Accepted Answer

A)  XCP 
B)  XCP-DS 
C)  Snap-A-Ray 
D)  RAPD 
A)  XCP 
B)  XCP-DS 
C)  Snap-A-Ray 
D)  RAPD

Question 18

An image receptor holder with an external aiming device is more comfortable for the patient.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following statements is FALSE?

Accepted Answer

A)  A sterile cotton roll may be placed on the opposite side of the bite block for stabilization of the image receptor holder. 
B)  The external indicator ring attachment must be as close to the patient's skin as possible without touching. 
C)  The patient must bite down on the bite block firmly enough to hold the image receptor in place. 
D)  The bite block back plate must be at a 105-degree angle for use with the paralleling technique 
A)  A sterile cotton roll may be placed on the opposite side of the bite block for stabilization of the image receptor holder. 
B)  The external indicator ring attachment must be as close to the patient's skin as possible without touching. 
C)  The patient must bite down on the bite block firmly enough to hold the image receptor in place. 
D)  The bite block back plate must be at a 105-degree angle for use with the paralleling technique

Question 20

Which of the following is NOT a disadvantage of the paralleling technique?

Accepted Answer

A)  The best images are obtained with the more difficult to position long 16-inch PID. 
B)  Image receptor positioning is difficult for patients with small mouths. 
C)  There is a limited number of image receptor holders that accommodate the paralleling technique. 
D)  It is more likely to excite an exaggerated gag reflex to achieve parallel position in the posterior region. 
A)  The best images are obtained with the more difficult to position long 16-inch PID. 
B)  Image receptor positioning is difficult for patients with small mouths. 
C)  There is a limited number of image receptor holders that accommodate the paralleling technique. 
D)  It is more likely to excite an exaggerated gag reflex to achieve parallel position in the posterior region.

Exam 14: The Periapical Examinationbisecting Technique

What is the ideal design of a paralleling image receptor holder?

Anterior periapical radiographs should be positioned in the oral cavity with the long dimension ___________, and posterior periapical radiographs should be positioned in the oral cavity with the long dimension __________.

A patient may bite down on a sterilized cotton roll that is placed on the same side of the bite block as the teeth to provide stablization and add to patient comfort.

When using the paralleling technique, the patient must bite down on the image receptor holder bite block as far away from the teeth as possible with the exception of which area?

With the paralleling technique, where is the central ray directed?

Each of the following statements regarding the principles of the paralleling technique is correct EXCEPT one. Which one is the EXCEPTION?

The paralleling technique must achieve parallelism by placing the image receptor:

Centering the image receptor to line up behind the central and lateral incisors to include recording the mesial halves of the canines if using a size #2 image receptor describes the placement of the image receptor for which periapical radiograph?

Image receptor holders designed for use with the paralleling technique usually have a short bite block.<KT>

How is the correct point of entry achieved when using the paralleling technique?

The paralleling technique is preferred over the bisecting technique.

When using the paralleling technique, insufficient vertical angulation will result in loss of the image of the crowns.

What is the ideal target-image receptor distance used with the paralleling technique?

Excessive vertical angulation when using the paralleling technique results in:

Comparing the paralleling technique with the bisecting technique, which of the following statements is correct?

What is the preferred target-surface distance when using the paralleling technique?

Which of these image receptor holders is NOT designed for use with the paralleling technique?

An image receptor holder with an external aiming device is more comfortable for the patient.

Which of the following statements is FALSE?

Which of the following is NOT a disadvantage of the paralleling technique?

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 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 for Specific Oral Conditions

Radiographic Techniques

Filters

Anterior periapical radiographs should be positioned in the oral cavity with the long dimension _, and posterior periapical radiographs should be positioned in the oral cavity with the long dimension .