In pantomograph, if patient chin is placed anterior to the focal trough, the structures appears to be:

 # In pantomograph, if patient chin is placed anterior to the focal trough, the structures appears to be:

A. Blurred and diminished

B. Blurred and magnified

C. Either magnified or diminished

D. Only blurred

The correct answer is A. Blurred and diminished.

Anatomic structures present within the focal trough are well defined on panoramic radiographers. If the chin is placed anterior to the focal trough, the structures appear to be blurred and diminished. If the chin is placed posterior to the focal trough, structures appear blurred and magnified.