22 Mandibular Block
Placement
Anatomy
The mandibular nerve is a mixed motor-sensory nerve, although it is primarily sensory. It exits from the cranium through the foramen ovale and parallels the posterior margin of the lateral pterygoid plate as it descends inferiorly and laterally toward the mandible (Figs. 22-1 and 22-2). The anterior division of the mandibular nerve is principally motor and supplies the muscles of mastication, whereas the posterior division is principally sensory and supplies the skin and mucous membranes overlying the lower jaw and skin anterior and superior to the ear (Fig. 22-3).
