One day he received a telephone call from Dr . Ralph R . Steinman, a dental colleague, who had been studying the flow of dentinal fluid in rats from the odontoblasts in the dental pulp through the dentin using an intraperitoneal injection of the fluorescent dye, acriflavine hydrochloride.
32.
Most experts on this topic state that the pain of DH is in reality a normal, physiologic response of the nerves in a healthy, non-inflamed dental pulp in the situation where the insulating layers of gingiva and cementum have been lost; i . e ., dentin hypersensitivity is not a true form of allodynia or hyperalgesia.
