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Fig. 159. A diagram illustrating' sensation without nerves in the dentin, e. Enamel. D
Dentin. o. Layer of odontoblasts. p. Pulp of tooth with nerve endings in physiological con-
nection with the odontoblasts. The fibrils of the dentin are prolongations of the odontoblasts. Any
injury to them is an injury to a portion of the odontoblasts and is transmitted by the nerves to the
brain.