User Manual
–Panoramic image assessment
NIMXEN020I
Owandy Radiology SAS
104
17.2.3
Downward angulation of the head
Figure 39
Problem
The Frankfurt plane is tilted downward.
Effects
The roots of the mandibular anterior teeth are positioned outside the
focal trough so it is out-of-focus and blurred.
The shadow of the hyoid bone is typically superimposed on the
anterior mandible.
Condyles may be cut off at the top of the radiograph.
Pre-molars are severely overlapped.
Severe curvature of the occlusal plane.
A
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