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What shadow casting principle is not likely to be met when using the paralleling technique?
D. Object (tooth) and image receptor should be as close as possible to each other
To compensate for the increased object-image receptor distance needed to achieve parallelism, the target- image receptor distance should be?
a. Increased
b. Decreased
A. Increased
Which of the following is NOT an advantage of the paralleling technique?
a. produces images with minimal dimensional distortion
b. minimized superimposition of adjacent structures
c. satifies more shadow casting principles
d. Easy technique for children
D. Easy technique for Children
The most important reason for using a holder when utilizing the paralleling technique is to stabilize the image receptor in a position
a. at a right angle to the teeth
b. perpendicular to the teeth
c. parallel to the teeth
d. Parallel to the bisector
C. Parallel to the teeth
Film holders designed for use with the paralleling technique should have?
Long biteblocks and L-shaped backing
Which of the following is an example of a holder that can be used with both paralleling and the bisecting technique?
a. SUPAb. uni-GripAR
c. XCP
d. Flip Ray
A. SUPA
Each of the following is a part of the assembled XCP holder EXCEPT one. which one?
a. metal arm
b. indicator ring
c. Long biteblock
d. 105 degree angle back
D 105 degree angle back
Lining the image receptor up behind the distal half of the canine to include the first and second premolars and mesial half of the first molar describes the placement for which of the following periapical radiographs?
a. Central incisors
b.Canine
c. Premolars
d. Molars
C. Premolar
To determine the horizontal angulation for the maxillary molar periapical radiograph, the central rays of the x-ray beam should be directed at the image receptor perpendicularly through the embrasures of the
A. First and Second molar
To determine the horizontal angulation for the mandibular premolar periapical radiograph, the central rays of the x-ray beam should be directed at the image receptor perpendicularly through the embrasures of the?
First and second premolar
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