4-26. MANDIBULAR CUSPIDS
Using the anterior instrument assembly, center the cuspid on the film, parallel
with the long axis of the tooth (see figure 4-27). With the bite-block resting on the
mandibular cuspid, insert a cotton roll between the block and the maxillary teeth. Have
the patient close his teeth, holding the film in place. Slide the locator ring along the
indicator rod bringing it close to the skin surface and align the x-ray unit extension tube
with the rod and the ring on the vertical and horizontal planes.
Figure 4-27. Mandibular cuspid area.