[Autoradiographic demonstration of the innervation of the tooth and the periodontium].

The innervation of the tooth and the parodont has been studied by autoradiography of 3H proline, unilaterally injected in the Gasser ganglion of adult cats. The presence of neurofibrils has been observed particularly in predentine and dentine, along the collagen fibers of the periodontal ligament, in the superficial layer of bone and cementum, in the papillar layer of the gingiva and as ultraterminal fibrils in the gingival epithelium.