CLINICAL MEDICINE

MEDICINE

RADIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
a reversed smile line observed on a panoramic image is likely due to
A
the patient’s spine is not straight
B
position of the patients chin is too low
C
the patient’s lips were not closed during imaging
D
position of the patients chin is too high
Explanation: 

Detailed explanation-1: -A radiolucent artifact will superimpose over the anterior teeth if the patient’s lips are not closed around the bite block (Figure 3). Failure to remove metal objects from the patient’s head and neck region will cause a ghost image to appear on the radiograph.

Detailed explanation-2: -3. What technique error has occurred when a “reverse smile line” is seen on the panoramic radiograph? Chin is tipped up.

Detailed explanation-3: -As mentioned previously, the most common error is the failure to position the tongue directly against the hard palate. As is noted in Figure 8, the maxillary roots of the anterior teeth are not visible, due to the fact that the tongue was not flat against the hard palate.

Detailed explanation-4: -Radiographic errors of positioning Technical or processing errors are the main errors that occur during panoramic radiographs.

There is 1 question to complete.