Dental Radiography -- Principles and Techniques
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| Bisecting Technique | also known as bisecting angle o bisecting of the angle
expose PA
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| Foreshortened Images | radiographic images that appear shortened
result from EXCESSIVE vertical angulation
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| Elongated Images | images of teeth appear too long
result from TOO LITTLE vertical angulation
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| Rules to Bisecting Technique | 1. Receptor placement
2. receptor position
3. vertical angualtion
4. horizontal angulation
5. receptor exposure
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| Advantages of Bisecting | can b used w/o beam alignment devices
decreased exposure time (8-inch PID)
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| Disadvantages of Bisecting | dimensional distortion
angulation problems
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