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situated in maximum intercuspation. Loss of facial and dental vertical
dimension occurs with the loss of teeth.
14. Identification of Adult and Pediatric Teeth
Adult teeth are numbered from 1 to 32, from the upper right to the
lower right. Teeth that are in malocclusion or that have been lost to
trauma should be identified, along with all missing teeth.
Pediatric teeth are lettered from A to T (20 teeth), also from the upper
right to the lower right.
F. Imaging Studies
1. Mandible Series
Three films are used for isolated mandibular fractures:
y
y
A posteroanterior (PA) showing a PA view of angle and ramus
fractures.
y
y
A reverse Towne of a PA view, showing medial/lateral displacement
of condyle and subcondylar fractures.
y
y
Bilateral oblique views for body and angle fractures.
2. Panorex
Panorex is a panoramic tomographic scan that shows the entire
mandible, including condyles, on one film. It is an excellent screening
evaluation study for the patient who is able to stand or sit upright
without motion. Panorex offers low radiation, low cost, and excellent
detail, and is excellent for follow-up evaluation (Figures 5.9 and 5.10).
Figure 5.9
Panorex film demonstrates a planar view of dentition, mandible, and condyles. Patient has
a left angle fracture and widening of the periodontal ligament space on tooth #17.