Which of the following would correct an exaggerated smile appearance of a panoramic radiograph?
A) Instruct the patient to straighten his or her posture.
B) Instruct the patient to close his or her lips around the biteblock.
C) Reposition the midsagittal plane perpendicular to the floor.
D) Reposition the ala-tragus line at +5 degrees.
D
Explanation: A) If the patient's chin is tipped too low (Frankfort plane angled downward and ala-tragus line angled downward greater than 5 degrees), the resultant image will appear as an exaggerated smile.
B) If the patient's chin is tipped too low (Frankfort plane angled downward and ala-tragus line angled downward greater than 5 degrees), the resultant image will appear as an exaggerated smile.
C) If the patient's chin is tipped too low (Frankfort plane angled downward and ala-tragus line angled downward greater than 5 degrees), the resultant image will appear as an exaggerated smile.
D) If the patient's chin is tipped too low (Frankfort plane angled downward and ala-tragus line angled downward greater than 5 degrees), the resultant image will appear as an exaggerated smile.
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