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18 Cards in this Set
- Front
- Back
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Which of these is not an intraoral radiograph?
A. bitewing b. occlusal c. panoramic d. periapical |
C. Panoramic |
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Which radiograph is used most often to detect proximal surface dental decay?
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Bitewing |
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Which intraoral technique satisfies more shadow casting principles
Bisecting Paralleling |
Paralleling |
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which intraoral technique is based on the rule of isometry? |
Bisecting |
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Each of the following is a shadow casting principle except one. Which one?
a. Object and image receptor should be perpendicular to each other
b. Object and image receptor should be as close as possible to each other
c. Object should be as far as practical from the target (source of radiation)
d. Radiation should strike the object and image receptor perpendiculary |
A. Object and image receptor should be perpendicular to each other |
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Which of these factors does NOT need to be considered when deciding which image receptor size to use when exposing a full mouth series?
a. Age of the patient b. Shape of the dental arches c. Previous accumulated exposure d. patients ability to tolerate the image receptor |
C. Previous accumulated exposure |
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What is the minimum image receptor requirement for an adult full mouth series of periapical radiographs
a. 12 b.14 c. 16 d.18 |
B. 14 |
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How many size #2 image receptors are required by most health care practices for the exposure of posterior radiographs of a full mouth series
a. 5 b.6 c.7 d.8 |
D. 8 |
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Lining the image receptor up behind the right and left central and lateral incisors to include the mesial half of the right and left canines describes the image placement for which of the following periapical radiographs
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A. Central Incisors |
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Anterior periapical image receptors are placed where in the oral oral cavity. Posterior periapical image receptors are placed where in the oral cavity?
a. Vertically; horizontally b. horizontally; vertically c. Vertically; vertically d. horizontally; horizontally |
A. vertically and Horizontally |
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Where should the embossed identification dot be positioned when taking periapical radiographs.
a. Toward the midline of the oral cavity b. Toward the incisal or occlusal edge of the tooth c. Toward the palate or floor of the mouth d. Toward the distal or back of the arch |
B. Toward the incisal or Occlusal Edge of the tooth |
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The x-ray tube head must be swiveled from side to side to adjust the vertical angulation of the central ray
To avoid overlap errors the central ray must be directed perpendicular to the curvature of the arch through the contact points of the teeth.
Which statements are true? |
D. First statement is False Second Statement is True |
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At which of the following settings would the PID be pointing to the floor?
a. -30 b. 0 c. +20 |
C. + 20 |
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An incorrect point of entry will result in?
Overlapping Foreshortening Cutting off the root apices conecutting
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D. Conecutting |
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List five contraindications for using the patient's finger to hold a film packet in position during exposure |
Potential for bending the image receptor Radiation exposure to the patients fingers Unprofessional Potential to move the image receptor Increased patient instruction and cooperation required |
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An image receptor positioner/holder must be used with?
a. the paralleling technique b. The bisecting technique c. The bitewing technique d. All of the above |
D. All of the above |
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Which of the following is the correct seating position for the patient during radiographhic examination when an image receptor without an external aiming device is used?
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A. Occlusal plane parallel and midsaggital plane perpendicular to the floor |
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Which of the following is the best sequence for exposing the full mouth series of periapical radiographs ? |
Maxillary Anterior Mandibular Anterior Maxillary posteriors Mandibular posteriors |
