4-16. MANDIBULAR CUSPIDS
Adjust the head as described for radiographs of mandibular teeth. Place the film
packet in the mouth with its long axis vertical and its upper border parallel to and slightly
above (approximately 1/8 inch) the incisal edges of the lateral incisor and cuspid teeth.
The film's anterior border should be located lingual to the distal surface of the opposite
central incisor. Adjust the tube to an average angulation of -20 degrees. Direct the
central ray straight through the bisecting plane (see figure 4-16). Follow the
manufacturer's instructions for exposure times.
Figure 4-16. Mandibular cuspid area.
4-17. MANDIBULAR INCISORS
Adjust the head as described for radiographs of mandibular teeth. Place the film
packet in the mouth with the long axis vertical. Both the long borders of the packet
should be placed under the tongue with the center of the film opposite the midline of the
arch and the upper border parallel to and slightly above (approximately 1/8 inch) the
incisal edges of the incisor teeth. Adjust the tube to an average angulation of
-15 degrees. Direct the central ray straight through the interproximal spaces at the
center of the film and perpendicular to the bisecting plane (see figure 4-17). Follow the
manufacturer's instructions for exposure times.
Figure 4-17. Mandibular incisor area.
MD0512
4-13