MEDICINE
RADIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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shortening of the image of the tooth
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overlapping of proximal surfaces
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lengthening of the image of the tooth
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overlapping of proximal surfaces
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Detailed explanation-1: -Incorrect horizontal angulation results in overlapped (unopened) contact areas. A film with overlapped contact areas cannot be used to examine the interproximal areas of the teeth.
Detailed explanation-2: -Horizontal alignment errors cause the image to shift anteriorly or posteriorly, resulting in the overlapping of the proximal contacts.
Detailed explanation-3: -Horizontal overlap is a result of the X-ray beam not passing through the open interproximal area at right angles to a properly positioned detector. Correcting this error on bitewings can usually be achieved by inclining the tubehead in a more mesial or distal direction.
Detailed explanation-4: –Overlapped contact points result when incorrect horizontal angulation is used.-Horizontal angulation is the positioning of the central ray in a side-to-side plane.