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 -20º. Direct the central ray straight through the bisecting plane (see figure 4-16). Follow the manufacturer's instructions for exposure times.