Figure 1-21.Film and cylinder placement: mandibular molar area.
Figure 1-22.Film and cylinder placement: patients with low
palatal vaults or edentulous arches.
you to determine when to alter standard vertical
angulation to suit the needs of a particular patient.
After you have determined the correct vertical
angulation for the area to be radiographed, adjust the
tube head using the angle dial on the tube head as a
structures. A patient may have an unusually high
maxillary vault or an unusually deep palatal vault. In
either case, you would decrease the standard vertical
angulation by about 5°. On the other hand, for a patient
with an unusually shallow vault, you would increase
the angulation by about 5°. The more experienced you
become in X-ray techniques, the easier it will be for