[Topographical and spatial anatomy of the mandibular alveolar nerve].

After reviewing the origin and the anatomical path of the mandibular alveolar nerve, the author describes the study techniques used on dry bone: serial frontal sections laid out sagittaly; catheterism prior to standard radiographs; and, fenestration of the external osseous wall. These techniques demonstrate the precise topographical and spatial anatomy of this branch of the trigeminal nerve (V3).