Which one of the following is not a principle of shadow casting?
A) Long axes of the teeth and image receptor should be parallel to each other.
B) Long axes of the teeth and image receptor should be as close to each other as possible.
C) Source of radiation should be as small as possible.
D) Teeth should be as close as possible to the radiation source.
D
Explanation: A) The object (tooth) should be as far as practical from the target (source of radiation).
B) The object (tooth) should be as far as practical from the target (source of radiation).
C) The object (tooth) should be as far as practical from the target (source of radiation).
D) The object (tooth) should be as far as practical from the target (source of radiation).
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A femoral hernia:
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Which of the following control panel settings will determine the quantity and length of exposure?
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How many bicuspids are in the primary dentition?
two six four none