Abstract
A neurohistological and histochemical investigation was made of the trigeminal and superior cervical sympathetic ganglia and also of the inferior ganglion of the vagus nerve of 35 dogs in whom four of the lower teeth were prepared for fitting with complete metal crowns. Polishing the hard tissues of the teeth was shown to induce reactive changes in some neurons, intraganglionic nerve fibers, and synaptic endings and in the content and distribution of RNA, glycogen, and hyaluronic acid in these ganglia on the side of preparation: The response was maximal 1–3 days after the operation. No marked changes were present in the ganglia 21–28 days after polishing of the teeth.
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